155090646 has 32 divisors (see below), whose sum is σ = 348808320. Its totient is φ = 51072552.

The previous prime is 155090629. The next prime is 155090653. The reversal of 155090646 is 646090551.

155090646 is a `hidden beast` number, since 1 + 5 + 5 + 0 + 9 + 0 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 155090646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12820 + ... + 21783.

It is an arithmetic number, because the mean of its divisors is an integer number (10900260).

Almost surely, 2^155090646 is an apocalyptic number.

155090646 is an abundant number, since it is smaller than the sum of its proper divisors (193717674).

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

155090646 is a wasteful number, since it uses less digits than its factorization.

155090646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34697 (or 34691 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 155090646 is about 12453.5394968659. The cubic root of 155090646 is about 537.2732294519.

The spelling of 155090646 in words is "one hundred fifty-five million, ninety thousand, six hundred forty-six".