872515761 has 16 divisors (see below), whose sum is σ = 1254941184. Its totient is φ = 536033664.

The previous prime is 872515753. The next prime is 872515789. The reversal of 872515761 is 167515278.

It is not a de Polignac number, because 872515761 - 2³ = 872515753 is a prime.

It is a super-2 number, since 2×872515761² = 1522567506386818242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872505761) 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, 5245 + ... + 42101.

It is an arithmetic number, because the mean of its divisors is an integer number (78433824).

Almost surely, 2^872515761 is an apocalyptic number.

It is an amenable number.

872515761 is a deficient number, since it is larger than the sum of its proper divisors (382425423).

872515761 is a wasteful number, since it uses less digits than its factorization.

872515761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37480.

The product of its digits is 117600, while the sum is 42.

The square root of 872515761 is about 29538.3777652057. The cubic root of 872515761 is about 955.5595565849.

The spelling of 872515761 in words is "eight hundred seventy-two million, five hundred fifteen thousand, seven hundred sixty-one".