255100155 has 48 divisors (see below), whose sum is σ = 427414272. Its totient is φ = 129888000.

The previous prime is 255100117. The next prime is 255100169. The reversal of 255100155 is 551001552.

It is not a de Polignac number, because 255100155 - 2²⁰ = 254051579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1689330 + ... + 1689480.

It is an arithmetic number, because the mean of its divisors is an integer number (8904464).

Almost surely, 2^255100155 is an apocalyptic number.

255100155 is a deficient number, since it is larger than the sum of its proper divisors (172314117).

255100155 is a wasteful number, since it uses less digits than its factorization.

255100155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 255100155 is about 15971.8550895004. The cubic root of 255100155 is about 634.2155813024.

It can be divided in two parts, 255100 and 155, that added together give a triangular number (255255 = T₇₁₄).

The spelling of 255100155 in words is "two hundred fifty-five million, one hundred thousand, one hundred fifty-five".