55963645 has 16 divisors (see below), whose sum is σ = 71496000. Its totient is φ = 41931648.

The previous prime is 55963639. The next prime is 55963651. The reversal of 55963645 is 54636955.

It is an interprime number because it is at equal distance from previous prime (55963639) and next prime (55963651).

It is a cyclic number.

It is not a de Polignac number, because 55963645 - 2³ = 55963637 is a prime.

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, 5146 + ... + 11764.

It is an arithmetic number, because the mean of its divisors is an integer number (4468500).

Almost surely, 2^55963645 is an apocalyptic number.

It is an amenable number.

55963645 is a deficient number, since it is larger than the sum of its proper divisors (15532355).

55963645 is a wasteful number, since it uses less digits than its factorization.

55963645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732.

The product of its digits is 486000, while the sum is 43.

The square root of 55963645 is about 7480.8853085714. The cubic root of 55963645 is about 382.5034274260.

The spelling of 55963645 in words is "fifty-five million, nine hundred sixty-three thousand, six hundred forty-five".