57388073 has 8 divisors (see below), whose sum is σ = 62406792. Its totient is φ = 52551936.

The previous prime is 57388057. The next prime is 57388091. The reversal of 57388073 is 37088375.

It can be written as a sum of positive squares in 4 ways, for example, as 12054784 + 45333289 = 3472^2 + 6733^2 .

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 57388073 - 2⁴ = 57388057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57388073.

It is not an unprimeable number, because it can be changed into a prime (57388043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44990 + ... + 46247.

It is an arithmetic number, because the mean of its divisors is an integer number (7800849).

Almost surely, 2^57388073 is an apocalyptic number.

It is an amenable number.

57388073 is a deficient number, since it is larger than the sum of its proper divisors (5018719).

57388073 is a wasteful number, since it uses less digits than its factorization.

57388073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91291.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 57388073 is about 7575.4916012098. The cubic root of 57388073 is about 385.7215299378.

The spelling of 57388073 in words is "fifty-seven million, three hundred eighty-eight thousand, seventy-three".