55487183 has 2 divisors, whose sum is σ = 55487184. Its totient is φ = 55487182.

The previous prime is 55487177. The next prime is 55487191. The reversal of 55487183 is 38178455.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55487183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55487183.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55487143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27743591 + 27743592.

It is an arithmetic number, because the mean of its divisors is an integer number (27743592).

Almost surely, 2^55487183 is an apocalyptic number.

55487183 is a deficient number, since it is larger than the sum of its proper divisors (1).

55487183 is an equidigital number, since it uses as much as digits as its factorization.

55487183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 55487183 is about 7448.9719424898. The cubic root of 55487183 is about 381.4148158484.

The spelling of 55487183 in words is "fifty-five million, four hundred eighty-seven thousand, one hundred eighty-three".