155724256 has 12 divisors (see below), whose sum is σ = 306582192. Its totient is φ = 77862112.

The previous prime is 155724227. The next prime is 155724271. The reversal of 155724256 is 652427551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2433160 + ... + 2433223.

It is an arithmetic number, because the mean of its divisors is an integer number (25548516).

Almost surely, 2^155724256 is an apocalyptic number.

155724256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155724256 is a deficient number, since it is larger than the sum of its proper divisors (150857936).

155724256 is an equidigital number, since it uses as much as digits as its factorization.

155724256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4866393 (or 4866385 counting only the distinct ones).

The product of its digits is 84000, while the sum is 37.

The square root of 155724256 is about 12478.9525201437. The cubic root of 155724256 is about 538.0038970987.

The spelling of 155724256 in words is "one hundred fifty-five million, seven hundred twenty-four thousand, two hundred fifty-six".