572736161 has 4 divisors (see below), whose sum is σ = 572895024. Its totient is φ = 572577300.

The previous prime is 572736149. The next prime is 572736181. The reversal of 572736161 is 161637275.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-572736161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (572736121) 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, 73895 + ... + 81276.

It is an arithmetic number, because the mean of its divisors is an integer number (143223756).

Almost surely, 2^572736161 is an apocalyptic number.

It is an amenable number.

572736161 is a deficient number, since it is larger than the sum of its proper divisors (158863).

572736161 is a wasteful number, since it uses less digits than its factorization.

572736161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158862.

The product of its digits is 52920, while the sum is 38.

The square root of 572736161 is about 23931.9067564622. The cubic root of 572736161 is about 830.4590101536.

The spelling of 572736161 in words is "five hundred seventy-two million, seven hundred thirty-six thousand, one hundred sixty-one".