256600451 has 4 divisors (see below), whose sum is σ = 256800504. Its totient is φ = 256400400.

The previous prime is 256600433. The next prime is 256600457. The reversal of 256600451 is 154006652.

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 256600451 - 2⁶ = 256600387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256600457) 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, 98090 + ... + 100671.

It is an arithmetic number, because the mean of its divisors is an integer number (64200126).

Almost surely, 2^256600451 is an apocalyptic number.

256600451 is a deficient number, since it is larger than the sum of its proper divisors (200053).

256600451 is a wasteful number, since it uses less digits than its factorization.

256600451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200052.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 256600451 is about 16018.7531037843. The cubic root of 256600451 is about 635.4564688630.

The spelling of 256600451 in words is "two hundred fifty-six million, six hundred thousand, four hundred fifty-one".