155664532 has 12 divisors (see below), whose sum is σ = 272634880. Its totient is φ = 77768856.

The previous prime is 155664503. The next prime is 155664539. The reversal of 155664532 is 235466551.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 155664491 and 155664500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155664539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10098 + ... + 20329.

Almost surely, 2^155664532 is an apocalyptic number.

It is an amenable number.

155664532 is a deficient number, since it is larger than the sum of its proper divisors (116970348).

155664532 is a wasteful number, since it uses less digits than its factorization.

155664532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31710 (or 31708 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 155664532 is about 12476.5593013459. The cubic root of 155664532 is about 537.9351091564.

The spelling of 155664532 in words is "one hundred fifty-five million, six hundred sixty-four thousand, five hundred thirty-two".