55665051 has 12 divisors (see below), whose sum is σ = 80369208. Its totient is φ = 34255104.

The previous prime is 55665047. The next prime is 55665053. The reversal of 55665051 is 15056655.

55665051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55665051 - 2² = 55665047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55665053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54390 + ... + 55403.

It is an arithmetic number, because the mean of its divisors is an integer number (6697434).

Almost surely, 2^55665051 is an apocalyptic number.

55665051 is a deficient number, since it is larger than the sum of its proper divisors (24704157).

55665051 is a wasteful number, since it uses less digits than its factorization.

55665051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109822 (or 109809 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 55665051 is about 7460.9014870859. The cubic root of 55665051 is about 381.8219316628.

The spelling of 55665051 in words is "fifty-five million, six hundred sixty-five thousand, fifty-one".