155981552 has 20 divisors (see below), whose sum is σ = 305151600. Its totient is φ = 77232768.

The previous prime is 155981543. The next prime is 155981591. The reversal of 155981552 is 255189551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45677 + ... + 48972.

It is an arithmetic number, because the mean of its divisors is an integer number (15257580).

Almost surely, 2^155981552 is an apocalyptic number.

It is an amenable number.

155981552 is a deficient number, since it is larger than the sum of its proper divisors (149170048).

155981552 is a wasteful number, since it uses less digits than its factorization.

155981552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94760 (or 94754 counting only the distinct ones).

The product of its digits is 90000, while the sum is 41.

The square root of 155981552 is about 12489.2574639167. The cubic root of 155981552 is about 538.3000403922.

The spelling of 155981552 in words is "one hundred fifty-five million, nine hundred eighty-one thousand, five hundred fifty-two".