155325972 has 36 divisors (see below), whose sum is σ = 375380096. Its totient is φ = 49986720.

The previous prime is 155325901. The next prime is 155325977. The reversal of 155325972 is 279523551.

It is a self number, because there is not a number n which added to its sum of digits gives 155325972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155325977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2397 + ... + 17787.

Almost surely, 2^155325972 is an apocalyptic number.

155325972 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 155325972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187690048).

155325972 is an abundant number, since it is smaller than the sum of its proper divisors (220054124).

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

155325972 is a wasteful number, since it uses less digits than its factorization.

155325972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15456 (or 15425 counting only the distinct ones).

The product of its digits is 94500, while the sum is 39.

The square root of 155325972 is about 12462.9840728455. The cubic root of 155325972 is about 537.5448350558.

The spelling of 155325972 in words is "one hundred fifty-five million, three hundred twenty-five thousand, nine hundred seventy-two".