155564406 has 12 divisors (see below), whose sum is σ = 337056252. Its totient is φ = 51854796.

The previous prime is 155564401. The next prime is 155564447. The reversal of 155564406 is 604465551.

155564406 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 644 + 0 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155564401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4321216 + ... + 4321251.

It is an arithmetic number, because the mean of its divisors is an integer number (28088021).

Almost surely, 2^155564406 is an apocalyptic number.

155564406 is an abundant number, since it is smaller than the sum of its proper divisors (181491846).

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

155564406 is a wasteful number, since it uses less digits than its factorization.

155564406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8642475 (or 8642472 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 155564406 is about 12472.5460913159. The cubic root of 155564406 is about 537.8197481676.

The spelling of 155564406 in words is "one hundred fifty-five million, five hundred sixty-four thousand, four hundred six".