656255451 has 16 divisors (see below), whose sum is σ = 884800800. Its totient is φ = 432633600.

The previous prime is 656255429. The next prime is 656255477. The reversal of 656255451 is 154552656.

It is a happy number.

It is not a de Polignac number, because 656255451 - 2⁷ = 656255323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656255351) 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, 101001 + ... + 107301.

It is an arithmetic number, because the mean of its divisors is an integer number (55300050).

Almost surely, 2^656255451 is an apocalyptic number.

656255451 is a deficient number, since it is larger than the sum of its proper divisors (228545349).

656255451 is a wasteful number, since it uses less digits than its factorization.

656255451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6686.

The product of its digits is 180000, while the sum is 39.

The square root of 656255451 is about 25617.4833073040. The cubic root of 656255451 is about 869.0090672875.

The spelling of 656255451 in words is "six hundred fifty-six million, two hundred fifty-five thousand, four hundred fifty-one".