872797451 has 4 divisors (see below), whose sum is σ = 883845600. Its totient is φ = 861749304.

The previous prime is 872797447. The next prime is 872797469. The reversal of 872797451 is 154797278.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 872797451 - 2² = 872797447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 872797451.

It is not an unprimeable number, because it can be changed into a prime (872797421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5523956 + ... + 5524113.

It is an arithmetic number, because the mean of its divisors is an integer number (220961400).

Almost surely, 2^872797451 is an apocalyptic number.

872797451 is a deficient number, since it is larger than the sum of its proper divisors (11048149).

872797451 is a wasteful number, since it uses less digits than its factorization.

872797451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11048148.

The product of its digits is 987840, while the sum is 50.

The square root of 872797451 is about 29543.1455840437. The cubic root of 872797451 is about 955.6623790291.

The spelling of 872797451 in words is "eight hundred seventy-two million, seven hundred ninety-seven thousand, four hundred fifty-one".