155587855272 has 32 divisors (see below), whose sum is σ = 409441725600. Its totient is φ = 49133006784.

The previous prime is 155587855249. The next prime is 155587855279. The reversal of 155587855272 is 272558785551.

It is not an unprimeable number, because it can be changed into a prime (155587855279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170600263 + ... + 170601174.

It is an arithmetic number, because the mean of its divisors is an integer number (12795053925).

Almost surely, 2^155587855272 is an apocalyptic number.

155587855272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155587855272 is an abundant number, since it is smaller than the sum of its proper divisors (253853870328).

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

155587855272 is a wasteful number, since it uses less digits than its factorization.

155587855272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341201465 (or 341201461 counting only the distinct ones).

The product of its digits is 39200000, while the sum is 60.

The spelling of 155587855272 in words is "one hundred fifty-five billion, five hundred eighty-seven million, eight hundred fifty-five thousand, two hundred seventy-two".