256531054 has 32 divisors (see below), whose sum is σ = 440294400. Its totient is φ = 111048192.

The previous prime is 256531049. The next prime is 256531063. The reversal of 256531054 is 450135652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153427 + ... + 155089.

It is an arithmetic number, because the mean of its divisors is an integer number (13759200).

Almost surely, 2^256531054 is an apocalyptic number.

256531054 is a deficient number, since it is larger than the sum of its proper divisors (183763346).

256531054 is a wasteful number, since it uses less digits than its factorization.

256531054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 256531054 is about 16016.5868398982. The cubic root of 256531054 is about 635.3991777859.

The spelling of 256531054 in words is "two hundred fifty-six million, five hundred thirty-one thousand, fifty-four".