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57132401 = 471215583
BaseRepresentation
bin1101100111110…
…0010101110001
310222111121220212
43121330111301
5104111214101
65400313505
71262421524
oct331742561
9128447825
1057132401
112a282467
1217172895
13bab4971
147832bbb
1550381bb
hex367c571

57132401 has 4 divisors (see below), whose sum is σ = 58348032. Its totient is φ = 55916772.

The previous prime is 57132379. The next prime is 57132409. The reversal of 57132401 is 10423175.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57132401 - 210 = 57131377 is a prime.

It is a super-2 number, since 2×571324012 = 6528222488049602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57132409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607745 + ... + 607838.

It is an arithmetic number, because the mean of its divisors is an integer number (14587008).

Almost surely, 257132401 is an apocalyptic number.

It is an amenable number.

57132401 is a deficient number, since it is larger than the sum of its proper divisors (1215631).

57132401 is a wasteful number, since it uses less digits than its factorization.

57132401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215630.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 57132401 is about 7558.5978197017. The cubic root of 57132401 is about 385.1478624718.

Adding to 57132401 its reverse (10423175), we get a palindrome (67555576).

The spelling of 57132401 in words is "fifty-seven million, one hundred thirty-two thousand, four hundred one".

Divisors: 1 47 1215583 57132401