155165656 has 16 divisors (see below), whose sum is σ = 292021200. Its totient is φ = 77293344.

The previous prime is 155165641. The next prime is 155165663. The reversal of 155165656 is 656561551.

155165656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 33900 + ... + 38203.

It is an arithmetic number, because the mean of its divisors is an integer number (18251325).

Almost surely, 2^155165656 is an apocalyptic number.

It is an amenable number.

155165656 is a deficient number, since it is larger than the sum of its proper divisors (136855544).

155165656 is a wasteful number, since it uses less digits than its factorization.

155165656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72378 (or 72374 counting only the distinct ones).

The product of its digits is 135000, while the sum is 40.

The square root of 155165656 is about 12456.5507264250. The cubic root of 155165656 is about 537.3598333629.

The spelling of 155165656 in words is "one hundred fifty-five million, one hundred sixty-five thousand, six hundred fifty-six".