872464251 has 4 divisors (see below), whose sum is σ = 1163285672. Its totient is φ = 581642832.

The previous prime is 872464247. The next prime is 872464253. The reversal of 872464251 is 152464278.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 872464251 - 2² = 872464247 is a prime.

It is a super-2 number, since 2×872464251² = 1522387738545982002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872464253) 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, 145410706 + ... + 145410711.

It is an arithmetic number, because the mean of its divisors is an integer number (290821418).

Almost surely, 2^872464251 is an apocalyptic number.

872464251 is a deficient number, since it is larger than the sum of its proper divisors (290821421).

872464251 is a wasteful number, since it uses less digits than its factorization.

872464251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290821420.

The product of its digits is 107520, while the sum is 39.

The square root of 872464251 is about 29537.5058358014. The cubic root of 872464251 is about 955.5407520186.

The spelling of 872464251 in words is "eight hundred seventy-two million, four hundred sixty-four thousand, two hundred fifty-one".