155065880 has 32 divisors (see below), whose sum is σ = 349498800. Its totient is φ = 61919616.

The previous prime is 155065877. The next prime is 155065909. The reversal of 155065880 is 88560551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22706 + ... + 28734.

Almost surely, 2^155065880 is an apocalyptic number.

155065880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155065880 is an abundant number, since it is smaller than the sum of its proper divisors (194432920).

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

155065880 is a wasteful number, since it uses less digits than its factorization.

155065880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6683 (or 6679 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 155065880 is about 12452.5451213798. The cubic root of 155065880 is about 537.2446293666.

The spelling of 155065880 in words is "one hundred fifty-five million, sixty-five thousand, eight hundred eighty".