55656645 has 16 divisors (see below), whose sum is σ = 97146432. Its totient is φ = 26984960.

The previous prime is 55656631. The next prime is 55656673. The reversal of 55656645 is 54665655.

It is not a de Polignac number, because 55656645 - 2⁶ = 55656581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55656597 and 55656606.

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, 168492 + ... + 168821.

It is an arithmetic number, because the mean of its divisors is an integer number (6071652).

Almost surely, 2^55656645 is an apocalyptic number.

55656645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55656645 is a deficient number, since it is larger than the sum of its proper divisors (41489787).

55656645 is a wasteful number, since it uses less digits than its factorization.

55656645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337332.

The product of its digits is 540000, while the sum is 42.

The square root of 55656645 is about 7460.3381290663. The cubic root of 55656645 is about 381.8027110048.

The spelling of 55656645 in words is "fifty-five million, six hundred fifty-six thousand, six hundred forty-five".