155998488 has 64 divisors (see below), whose sum is σ = 397440000. Its totient is φ = 51017472.

The previous prime is 155998487. The next prime is 155998517. The reversal of 155998488 is 884899551.

It is a super-2 number, since 2×155998488² = 48671056516572288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155998487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424881 + ... + 425247.

It is an arithmetic number, because the mean of its divisors is an integer number (6210000).

Almost surely, 2^155998488 is an apocalyptic number.

It is an amenable number.

155998488 is an abundant number, since it is smaller than the sum of its proper divisors (241441512).

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

155998488 is a wasteful number, since it uses less digits than its factorization.

155998488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 660 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 57.

The square root of 155998488 is about 12489.9354682080. The cubic root of 155998488 is about 538.3195220113.

The spelling of 155998488 in words is "one hundred fifty-five million, nine hundred ninety-eight thousand, four hundred eighty-eight".