55090817 has 16 divisors (see below), whose sum is σ = 58419072. Its totient is φ = 51891840.

The previous prime is 55090811. The next prime is 55090831. The reversal of 55090817 is 71809055.

It is a cyclic number.

It is not a de Polignac number, because 55090817 - 2⁴ = 55090801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55090811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175853 + ... + 176165.

It is an arithmetic number, because the mean of its divisors is an integer number (3651192).

Almost surely, 2^55090817 is an apocalyptic number.

It is an amenable number.

55090817 is a deficient number, since it is larger than the sum of its proper divisors (3328255).

55090817 is a wasteful number, since it uses less digits than its factorization.

55090817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 55090817 is about 7422.3188425182. The cubic root of 55090817 is about 380.5044477807.

The spelling of 55090817 in words is "fifty-five million, ninety thousand, eight hundred seventeen".