155660432 has 20 divisors (see below), whose sum is σ = 319333356. Its totient is φ = 73251840.

The previous prime is 155660431. The next prime is 155660437. The reversal of 155660432 is 234066551.

It can be written as a sum of positive squares in 2 ways, for example, as 115261696 + 40398736 = 10736^2 + 6356^2 .

It is not an unprimeable number, because it can be changed into a prime (155660431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285869 + ... + 286412.

Almost surely, 2^155660432 is an apocalyptic number.

It is an amenable number.

155660432 is an abundant number, since it is smaller than the sum of its proper divisors (163672924).

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

155660432 is a wasteful number, since it uses less digits than its factorization.

155660432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572306 (or 572300 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 155660432 is about 12476.3949921442. The cubic root of 155660432 is about 537.9303862794.

The spelling of 155660432 in words is "one hundred fifty-five million, six hundred sixty thousand, four hundred thirty-two".