57137903 has 4 divisors (see below), whose sum is σ = 57920688. Its totient is φ = 56355120.

The previous prime is 57137897. The next prime is 57137923. The reversal of 57137903 is 30973175.

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

It is a cyclic number.

It is not a de Polignac number, because 57137903 - 2²² = 52943599 is a prime.

It is a super-3 number, since 3×57137903³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57137923) 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 3 ways as a sum of consecutive naturals, for example, 391283 + ... + 391428.

It is an arithmetic number, because the mean of its divisors is an integer number (14480172).

Almost surely, 2^57137903 is an apocalyptic number.

57137903 is a deficient number, since it is larger than the sum of its proper divisors (782785).

57137903 is an equidigital number, since it uses as much as digits as its factorization.

57137903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782784.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 57137903 is about 7558.9617673329. The cubic root of 57137903 is about 385.1602256579.

The spelling of 57137903 in words is "fifty-seven million, one hundred thirty-seven thousand, nine hundred three".