57504431 has 4 divisors (see below), whose sum is σ = 60531000. Its totient is φ = 54477864.

The previous prime is 57504407. The next prime is 57504449. The reversal of 57504431 is 13440575.

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

It is a de Polignac number, because none of the positive numbers 2^k-57504431 is a prime.

It is a super-2 number, since 2×57504431² = 6613519169267522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57504394 and 57504403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57504331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513256 + ... + 1513293.

It is an arithmetic number, because the mean of its divisors is an integer number (15132750).

Almost surely, 2^57504431 is an apocalyptic number.

57504431 is a deficient number, since it is larger than the sum of its proper divisors (3026569).

57504431 is a wasteful number, since it uses less digits than its factorization.

57504431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026568.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 57504431 is about 7583.1676099108. The cubic root of 57504431 is about 385.9820456628.

The spelling of 57504431 in words is "fifty-seven million, five hundred four thousand, four hundred thirty-one".