57192161 has 4 divisors (see below), whose sum is σ = 61591572. Its totient is φ = 52792752.

The previous prime is 57192143. The next prime is 57192167. The reversal of 57192161 is 16129175.

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 2890000 + 54302161 = 1700^2 + 7369^2 .

It is a cyclic number.

It is not a de Polignac number, because 57192161 - 2¹⁰ = 57191137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57192167) 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, 2199686 + ... + 2199711.

It is an arithmetic number, because the mean of its divisors is an integer number (15397893).

Almost surely, 2^57192161 is an apocalyptic number.

It is an amenable number.

57192161 is a deficient number, since it is larger than the sum of its proper divisors (4399411).

57192161 is a wasteful number, since it uses less digits than its factorization.

57192161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4399410.

The product of its digits is 3780, while the sum is 32.

The square root of 57192161 is about 7562.5499006618. The cubic root of 57192161 is about 385.2821027950.

The spelling of 57192161 in words is "fifty-seven million, one hundred ninety-two thousand, one hundred sixty-one".