155564454 has 32 divisors (see below), whose sum is σ = 325163520. Its totient is φ = 49567392.

The previous prime is 155564449. The next prime is 155564477. The reversal of 155564454 is 454465551.

155564454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5712 + ... + 18540.

It is an arithmetic number, because the mean of its divisors is an integer number (10161360).

Almost surely, 2^155564454 is an apocalyptic number.

155564454 is an abundant number, since it is smaller than the sum of its proper divisors (169599066).

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

155564454 is a wasteful number, since it uses less digits than its factorization.

155564454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12924.

The product of its digits is 240000, while the sum is 39.

The square root of 155564454 is about 12472.5480155420. The cubic root of 155564454 is about 537.8198034830.

The spelling of 155564454 in words is "one hundred fifty-five million, five hundred sixty-four thousand, four hundred fifty-four".