57501161 has 4 divisors (see below), whose sum is σ = 57562452. Its totient is φ = 57439872.

The previous prime is 57501149. The next prime is 57501167. The reversal of 57501161 is 16110575.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13690000 + 43811161 = 3700^2 + 6619^2 .

It is a cyclic number.

It is not a de Polignac number, because 57501161 - 2²² = 53306857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57501161.

It is not an unprimeable number, because it can be changed into a prime (57501167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29216 + ... + 31121.

It is an arithmetic number, because the mean of its divisors is an integer number (14390613).

Almost surely, 2^57501161 is an apocalyptic number.

It is an amenable number.

57501161 is a deficient number, since it is larger than the sum of its proper divisors (61291).

57501161 is an equidigital number, since it uses as much as digits as its factorization.

57501161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61290.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 57501161 is about 7582.9519977381. The cubic root of 57501161 is about 385.9747292109.

The spelling of 57501161 in words is "fifty-seven million, five hundred one thousand, one hundred sixty-one".