55320983 has 2 divisors, whose sum is σ = 55320984. Its totient is φ = 55320982.

The previous prime is 55320973. The next prime is 55320997. The reversal of 55320983 is 38902355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55320983 - 2²² = 51126679 is a prime.

It is a super-2 number, since 2×55320983² = 6120822320172578, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55320953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27660491 + 27660492.

It is an arithmetic number, because the mean of its divisors is an integer number (27660492).

Almost surely, 2^55320983 is an apocalyptic number.

55320983 is a deficient number, since it is larger than the sum of its proper divisors (1).

55320983 is an equidigital number, since it uses as much as digits as its factorization.

55320983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55320983 is about 7437.8076743083. The cubic root of 55320983 is about 381.0336194709.

The spelling of 55320983 in words is "fifty-five million, three hundred twenty thousand, nine hundred eighty-three".