155668475 has 12 divisors (see below), whose sum is σ = 193878960. Its totient is φ = 123986400.

The previous prime is 155668451. The next prime is 155668477. The reversal of 155668475 is 574866551.

It is not a de Polignac number, because 155668475 - 2²² = 151474171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155668477) 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, 7871 + ... + 19320.

It is an arithmetic number, because the mean of its divisors is an integer number (16156580).

Almost surely, 2^155668475 is an apocalyptic number.

155668475 is a deficient number, since it is larger than the sum of its proper divisors (38210485).

155668475 is a wasteful number, since it uses less digits than its factorization.

155668475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27430 (or 27425 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 47.

The square root of 155668475 is about 12476.7173166663. The cubic root of 155668475 is about 537.9396511036.

The spelling of 155668475 in words is "one hundred fifty-five million, six hundred sixty-eight thousand, four hundred seventy-five".