872407057 has 4 divisors (see below), whose sum is σ = 872510320. Its totient is φ = 872303796.

The previous prime is 872407051. The next prime is 872407111. The reversal of 872407057 is 750704278.

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-872407057 is a prime.

It is a super-2 number, since 2×872407057² = 1522188146206802498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872407051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37707 + ... + 56272.

It is an arithmetic number, because the mean of its divisors is an integer number (218127580).

Almost surely, 2^872407057 is an apocalyptic number.

It is an amenable number.

872407057 is a deficient number, since it is larger than the sum of its proper divisors (103263).

872407057 is an equidigital number, since it uses as much as digits as its factorization.

872407057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103262.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 872407057 is about 29536.5376610056. The cubic root of 872407057 is about 955.5198715482.

The spelling of 872407057 in words is "eight hundred seventy-two million, four hundred seven thousand, fifty-seven".