57558157 has 4 divisors (see below), whose sum is σ = 57573376. Its totient is φ = 57542940.

The previous prime is 57558139. The next prime is 57558173. The reversal of 57558157 is 75185575.

It is a happy number.

57558157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 57558157 - 2¹⁵ = 57525389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57598157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2932 + ... + 11122.

It is an arithmetic number, because the mean of its divisors is an integer number (14393344).

Almost surely, 2^57558157 is an apocalyptic number.

It is an amenable number.

57558157 is a deficient number, since it is larger than the sum of its proper divisors (15219).

57558157 is an equidigital number, since it uses as much as digits as its factorization.

57558157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15218.

The product of its digits is 245000, while the sum is 43.

The square root of 57558157 is about 7586.7092339169. The cubic root of 57558157 is about 386.1022150488.

The spelling of 57558157 in words is "fifty-seven million, five hundred fifty-eight thousand, one hundred fifty-seven".