155566552 has 16 divisors (see below), whose sum is σ = 291836160. Its totient is φ = 77743584.

The previous prime is 155566519. The next prime is 155566589. The reversal of 155566552 is 255665551.

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, 17878 + ... + 25114.

It is an arithmetic number, because the mean of its divisors is an integer number (18239760).

Almost surely, 2^155566552 is an apocalyptic number.

It is an amenable number.

155566552 is a deficient number, since it is larger than the sum of its proper divisors (136269608).

155566552 is a wasteful number, since it uses less digits than its factorization.

155566552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9930 (or 9926 counting only the distinct ones).

The product of its digits is 225000, while the sum is 40.

The square root of 155566552 is about 12472.6321199657. The cubic root of 155566552 is about 537.8222212180.

The spelling of 155566552 in words is "one hundred fifty-five million, five hundred sixty-six thousand, five hundred fifty-two".