Search a number
-
+
57231479392201 = 75651492
BaseRepresentation
bin11010000001101001111011…
…11111111100011111001001
321111122021110012102201222101
431000310331333330133021
530000140032211022301
6321415440105353401
715024560261152102
oct1500647577743711
9244567405381871
1057231479392201
1117265809105944
126503a16798861
1325c1ba008ab5a
14101c0386273a9
15693ac7235701
hex340d3dffc7c9

57231479392201 has 3 divisors (see below), whose sum is σ = 57231486957351. Its totient is φ = 57231471827052.

The previous prime is 57231479392163. The next prime is 57231479392207. The reversal of 57231479392201 is 10229397413275.

The square root of 57231479392201 is 7565149.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 9653765916601 + 47577713475600 = 3107051^2 + 6897660^2 .

It is not a de Polignac number, because 57231479392201 - 215 = 57231479359433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57231479392207) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3782575 + ... + 11347723.

It is an arithmetic number, because the mean of its divisors is an integer number (19077162319117).

Almost surely, 257231479392201 is an apocalyptic number.

57231479392201 is the 7565149-th square number.

57231479392201 is the 3782575-th centered octagonal number.

It is an amenable number.

57231479392201 is a deficient number, since it is larger than the sum of its proper divisors (7565150).

57231479392201 is an frugal number, since it uses more digits than its factorization.

57231479392201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15130298 (or 7565149 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 57231479392201 in words is "fifty-seven trillion, two hundred thirty-one billion, four hundred seventy-nine million, three hundred ninety-two thousand, two hundred one".

Divisors: 1 7565149 57231479392201