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57970081 = 134459237
BaseRepresentation
bin1101110100100…
…0110110100001
311001002012000001
43131020312201
5104320020311
65430300001
71302510661
oct335106641
9131065001
1057970081
112a7a4864
12174b7601
13c019030
1479b01a1
1551514c1
hex3748da1

57970081 has 4 divisors (see below), whose sum is σ = 62429332. Its totient is φ = 53510832.

The previous prime is 57970079. The next prime is 57970091. The reversal of 57970081 is 18007975.

57970081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38750625 + 19219456 = 6225^2 + 4384^2 .

It is a cyclic number.

It is not a de Polignac number, because 57970081 - 21 = 57970079 is a prime.

It is a super-2 number, since 2×579700812 = 6721060582293122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57970081.

It is not an unprimeable number, because it can be changed into a prime (57970001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2229606 + ... + 2229631.

It is an arithmetic number, because the mean of its divisors is an integer number (15607333).

Almost surely, 257970081 is an apocalyptic number.

It is an amenable number.

57970081 is a deficient number, since it is larger than the sum of its proper divisors (4459251).

57970081 is a wasteful number, since it uses less digits than its factorization.

57970081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459250.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 57970081 is about 7613.8085739004. The cubic root of 57970081 is about 387.0210935583.

The spelling of 57970081 in words is "fifty-seven million, nine hundred seventy thousand, eighty-one".

Divisors: 1 13 4459237 57970081