155117612 has 36 divisors (see below), whose sum is σ = 305654160. Its totient is φ = 68467872.

The previous prime is 155117609. The next prime is 155117617. The reversal of 155117612 is 216711551.

155117612 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155117612² = 48122947105165088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155117617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24689 + ... + 30327.

Almost surely, 2^155117612 is an apocalyptic number.

It is an amenable number.

155117612 is a deficient number, since it is larger than the sum of its proper divisors (150536548).

155117612 is a wasteful number, since it uses less digits than its factorization.

155117612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702 (or 5677 counting only the distinct ones).

The product of its digits is 2100, while the sum is 29.

The square root of 155117612 is about 12454.6221138981. The cubic root of 155117612 is about 537.3043666625.

The spelling of 155117612 in words is "one hundred fifty-five million, one hundred seventeen thousand, six hundred twelve".