155564844 has 12 divisors (see below), whose sum is σ = 362984664. Its totient is φ = 51854944.

The previous prime is 155564833. The next prime is 155564873. The reversal of 155564844 is 448465551.

155564844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 155564796 and 155564805.

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, 6481857 + ... + 6481880.

It is an arithmetic number, because the mean of its divisors is an integer number (30248722).

Almost surely, 2^155564844 is an apocalyptic number.

It is an amenable number.

155564844 is an abundant number, since it is smaller than the sum of its proper divisors (207419820).

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

155564844 is a wasteful number, since it uses less digits than its factorization.

155564844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12963744 (or 12963742 counting only the distinct ones).

The product of its digits is 384000, while the sum is 42.

The square root of 155564844 is about 12472.5636498677. The cubic root of 155564844 is about 537.8202529206.

The spelling of 155564844 in words is "one hundred fifty-five million, five hundred sixty-four thousand, eight hundred forty-four".