155550432 has 96 divisors (see below), whose sum is σ = 430012800. Its totient is φ = 49161728.

The previous prime is 155550413. The next prime is 155550457. The reversal of 155550432 is 234055551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 155550432.

It is a congruent number.

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, 163783 + ... + 164729.

It is an arithmetic number, because the mean of its divisors is an integer number (4479300).

Almost surely, 2^155550432 is an apocalyptic number.

155550432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155550432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215006400).

155550432 is an abundant number, since it is smaller than the sum of its proper divisors (274462368).

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

155550432 is a wasteful number, since it uses less digits than its factorization.

155550432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 155550432 is about 12471.9858883820. The cubic root of 155550432 is about 537.8036439734.

The spelling of 155550432 in words is "one hundred fifty-five million, five hundred fifty thousand, four hundred thirty-two".