155151666 has 16 divisors (see below), whose sum is σ = 344781600. Its totient is φ = 51717204.

The previous prime is 155151649. The next prime is 155151691. The reversal of 155151666 is 666151551.

It is a self number, because there is not a number n which added to its sum of digits gives 155151666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436536 + ... + 1436643.

It is an arithmetic number, because the mean of its divisors is an integer number (21548850).

Almost surely, 2^155151666 is an apocalyptic number.

155151666 is an abundant number, since it is smaller than the sum of its proper divisors (189629934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155151666 is a wasteful number, since it uses less digits than its factorization.

155151666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873190 (or 2873184 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 155151666 is about 12455.9891618450. The cubic root of 155151666 is about 537.3436831180.

The spelling of 155151666 in words is "one hundred fifty-five million, one hundred fifty-one thousand, six hundred sixty-six".