155919255 has 32 divisors (see below), whose sum is σ = 254778048. Its totient is φ = 81408000.

The previous prime is 155919229. The next prime is 155919299. The reversal of 155919255 is 552919551.

155919255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155919255 - 2⁹ = 155918743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146425 + ... + 147485.

It is an arithmetic number, because the mean of its divisors is an integer number (7961814).

Almost surely, 2^155919255 is an apocalyptic number.

155919255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155919255 is a deficient number, since it is larger than the sum of its proper divisors (98858793).

155919255 is a wasteful number, since it uses less digits than its factorization.

155919255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267.

The product of its digits is 101250, while the sum is 42.

The square root of 155919255 is about 12486.7631914760. The cubic root of 155919255 is about 538.2283675083.

The spelling of 155919255 in words is "one hundred fifty-five million, nine hundred nineteen thousand, two hundred fifty-five".