55321005 has 32 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 28607040.

The previous prime is 55320997. The next prime is 55321039. The reversal of 55321005 is 50012355.

It is not a de Polignac number, because 55321005 - 2³ = 55320997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128140 + ... + 128570.

It is an arithmetic number, because the mean of its divisors is an integer number (2851200).

Almost surely, 2^55321005 is an apocalyptic number.

It is an amenable number.

55321005 is a deficient number, since it is larger than the sum of its proper divisors (35917395).

55321005 is a wasteful number, since it uses less digits than its factorization.

55321005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 55321005 is about 7437.8091532386. The cubic root of 55321005 is about 381.0336699806.

The spelling of 55321005 in words is "fifty-five million, three hundred twenty-one thousand, five".