57078161 has 16 divisors (see below), whose sum is σ = 69166080. Its totient is φ = 46059840.

The previous prime is 57078149. The next prime is 57078179. The reversal of 57078161 is 16187075.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57078161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57078661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4475 + ... + 11583.

It is an arithmetic number, because the mean of its divisors is an integer number (4322880).

Almost surely, 2^57078161 is an apocalyptic number.

It is an amenable number.

57078161 is a deficient number, since it is larger than the sum of its proper divisors (12087919).

57078161 is a wasteful number, since it uses less digits than its factorization.

57078161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 57078161 is about 7555.0090006565. The cubic root of 57078161 is about 385.0259407944.

The spelling of 57078161 in words is "fifty-seven million, seventy-eight thousand, one hundred sixty-one".