155320332 has 48 divisors (see below), whose sum is σ = 370137600. Its totient is φ = 50678080.

The previous prime is 155320327. The next prime is 155320337. The reversal of 155320332 is 233023551.

It is a happy number.

155320332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155320327) and next prime (155320337).

It is not an unprimeable number, because it can be changed into a prime (155320337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304894 + ... + 305402.

It is an arithmetic number, because the mean of its divisors is an integer number (7711200).

Almost surely, 2^155320332 is an apocalyptic number.

155320332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155320332 is an abundant number, since it is smaller than the sum of its proper divisors (214817268).

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

155320332 is a wasteful number, since it uses less digits than its factorization.

155320332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 155320332 is about 12462.7578007438. The cubic root of 155320332 is about 537.5383287612.

Adding to 155320332 its reverse (233023551), we get a palindrome (388343883).

The spelling of 155320332 in words is "one hundred fifty-five million, three hundred twenty thousand, three hundred thirty-two".