155521352 has 32 divisors (see below), whose sum is σ = 334065600. Its totient is φ = 66490944.

The previous prime is 155521349. The next prime is 155521369. The reversal of 155521352 is 253125551.

It is a super-3 number, since 3×155521352³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21674 + ... + 27942.

It is an arithmetic number, because the mean of its divisors is an integer number (10439550).

Almost surely, 2^155521352 is an apocalyptic number.

It is an amenable number.

155521352 is an abundant number, since it is smaller than the sum of its proper divisors (178544248).

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

155521352 is a wasteful number, since it uses less digits than its factorization.

155521352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6725 (or 6721 counting only the distinct ones).

The product of its digits is 7500, while the sum is 29.

The square root of 155521352 is about 12470.8200211534. The cubic root of 155521352 is about 537.7701279309.

The spelling of 155521352 in words is "one hundred fifty-five million, five hundred twenty-one thousand, three hundred fifty-two".