1552645656 has 24 divisors (see below), whose sum is σ = 4205082180. Its totient is φ = 517548528.

The previous prime is 1552645631. The next prime is 1552645657. The reversal of 1552645656 is 6565462551.

1552645656 is a `hidden beast` number, since 1 + 552 + 6 + 45 + 6 + 56 = 666.

1552645656 is digitally balanced in base 4, 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 (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552645657) 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, 10782190 + ... + 10782333.

Almost surely, 2^1552645656 is an apocalyptic number.

It is an amenable number.

1552645656 is an abundant number, since it is smaller than the sum of its proper divisors (2652436524).

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

1552645656 is a wasteful number, since it uses less digits than its factorization.

1552645656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21564535 (or 21564528 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The square root of 1552645656 is about 39403.6249093913. The cubic root of 1552645656 is about 1157.9526052891.

The spelling of 1552645656 in words is "one billion, five hundred fifty-two million, six hundred forty-five thousand, six hundred fifty-six".