155668532 has 6 divisors (see below), whose sum is σ = 272419938. Its totient is φ = 77834264.

The previous prime is 155668529. The next prime is 155668543. The reversal of 155668532 is 235866551.

155668532 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 155650576 + 17956 = 12476^2 + 134^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155668532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19458563 + ... + 19458570.

It is an arithmetic number, because the mean of its divisors is an integer number (45403323).

Almost surely, 2^155668532 is an apocalyptic number.

It is an amenable number.

155668532 is a deficient number, since it is larger than the sum of its proper divisors (116751406).

155668532 is a wasteful number, since it uses less digits than its factorization.

155668532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38917137 (or 38917135 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

The square root of 155668532 is about 12476.7196009207. The cubic root of 155668532 is about 537.9397167614.

The spelling of 155668532 in words is "one hundred fifty-five million, six hundred sixty-eight thousand, five hundred thirty-two".