155057255 has 16 divisors (see below), whose sum is σ = 199796544. Its totient is φ = 115100160.

The previous prime is 155057239. The next prime is 155057261. The reversal of 155057255 is 552750551.

It is not a de Polignac number, because 155057255 - 2⁴ = 155057239 is a prime.

It is a Duffinian number.

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, 6812 + ... + 18881.

It is an arithmetic number, because the mean of its divisors is an integer number (12487284).

Almost surely, 2^155057255 is an apocalyptic number.

155057255 is a deficient number, since it is larger than the sum of its proper divisors (44739289).

155057255 is a wasteful number, since it uses less digits than its factorization.

155057255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25786.

The product of its (nonzero) digits is 43750, while the sum is 35.

The square root of 155057255 is about 12452.1988018181. The cubic root of 155057255 is about 537.2346683942.

The spelling of 155057255 in words is "one hundred fifty-five million, fifty-seven thousand, two hundred fifty-five".