155005564 has 12 divisors (see below), whose sum is σ = 310011184. Its totient is φ = 66430944.

The previous prime is 155005547. The next prime is 155005573. The reversal of 155005564 is 465500551.

155005564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

155005564 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767929 + ... + 2767984.

Almost surely, 2^155005564 is an apocalyptic number.

155005564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155005564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155005564 is a wasteful number, since it uses less digits than its factorization.

155005564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5535924 (or 5535922 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 155005564 is about 12450.1230516007. The cubic root of 155005564 is about 537.1749629568.

The spelling of 155005564 in words is "one hundred fifty-five million, five thousand, five hundred sixty-four".