155513404252 has 12 divisors (see below), whose sum is σ = 273347350920. Its totient is φ = 77414161136.

The previous prime is 155513404229. The next prime is 155513404273. The reversal of 155513404252 is 252404315551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85634227 + ... + 85636042.

It is an arithmetic number, because the mean of its divisors is an integer number (22778945910).

Almost surely, 2^155513404252 is an apocalyptic number.

It is an amenable number.

155513404252 is a deficient number, since it is larger than the sum of its proper divisors (117833946668).

155513404252 is a wasteful number, since it uses less digits than its factorization.

155513404252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171270500 (or 171270498 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 155513404252 in words is "one hundred fifty-five billion, five hundred thirteen million, four hundred four thousand, two hundred fifty-two".