155057256 has 48 divisors (see below), whose sum is σ = 425713860. Its totient is φ = 50976000.

The previous prime is 155057239. The next prime is 155057261. The reversal of 155057256 is 652750551.

It is a happy number.

155057256 is a `hidden beast` number, since 1 + 550 + 57 + 2 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155002500 + 54756 = 12450^2 + 234^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 155057256.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9495 + ... + 20006.

Almost surely, 2^155057256 is an apocalyptic number.

It is an amenable number.

155057256 is an abundant number, since it is smaller than the sum of its proper divisors (270656604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155057256 is a wasteful number, since it uses less digits than its factorization.

155057256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29586 (or 29579 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 155057256 is about 12452.1988419716. The cubic root of 155057256 is about 537.2346695491.

The spelling of 155057256 in words is "one hundred fifty-five million, fifty-seven thousand, two hundred fifty-six".