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57404831 = 116597919
BaseRepresentation
bin1101101011111…
…0110110011111
311000000110121212
43122332312133
5104143423311
65410215035
71264635011
oct332766637
9130013555
1057404831
112a449110
121728447b
13bb7b973
1478a41b1
15508dc8b
hex36bed9f

57404831 has 8 divisors (see below), whose sum is σ = 62726400. Its totient is φ = 52100440.

The previous prime is 57404827. The next prime is 57404873. The reversal of 57404831 is 13840475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57404831 - 22 = 57404827 is a prime.

It is a super-2 number, since 2×574048312 = 6590629244277122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57404731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3290 + ... + 11208.

It is an arithmetic number, because the mean of its divisors is an integer number (7840800).

Almost surely, 257404831 is an apocalyptic number.

57404831 is a deficient number, since it is larger than the sum of its proper divisors (5321569).

57404831 is a wasteful number, since it uses less digits than its factorization.

57404831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8589.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 57404831 is about 7576.5975873079. The cubic root of 57404831 is about 385.7590713756.

The spelling of 57404831 in words is "fifty-seven million, four hundred four thousand, eight hundred thirty-one".

Divisors: 1 11 659 7249 7919 87109 5218621 57404831