155161554 has 32 divisors (see below), whose sum is σ = 315778176. Its totient is φ = 50816640.

The previous prime is 155161549. The next prime is 155161577. The reversal of 155161554 is 455161551.

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, 194284 + ... + 195080.

It is an arithmetic number, because the mean of its divisors is an integer number (9868068).

Almost surely, 2^155161554 is an apocalyptic number.

155161554 is an abundant number, since it is smaller than the sum of its proper divisors (160616622).

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

155161554 is a wasteful number, since it uses less digits than its factorization.

155161554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330.

The product of its digits is 15000, while the sum is 33.

The square root of 155161554 is about 12456.3860730149. The cubic root of 155161554 is about 537.3550980593.

The spelling of 155161554 in words is "one hundred fifty-five million, one hundred sixty-one thousand, five hundred fifty-four".