256093477 has 4 divisors (see below), whose sum is σ = 267228000. Its totient is φ = 244958956.

The previous prime is 256093471. The next prime is 256093489. The reversal of 256093477 is 774390652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256093477 - 2⁷ = 256093349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256093471) 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, 5567227 + ... + 5567272.

It is an arithmetic number, because the mean of its divisors is an integer number (66807000).

Almost surely, 2^256093477 is an apocalyptic number.

It is an amenable number.

256093477 is a deficient number, since it is larger than the sum of its proper divisors (11134523).

256093477 is a wasteful number, since it uses less digits than its factorization.

256093477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134522.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 256093477 is about 16002.9208896376. The cubic root of 256093477 is about 635.0376954910.

The spelling of 256093477 in words is "two hundred fifty-six million, ninety-three thousand, four hundred seventy-seven".