55616893 has 2 divisors, whose sum is σ = 55616894. Its totient is φ = 55616892.

The previous prime is 55616887. The next prime is 55616909. The reversal of 55616893 is 39861655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43520409 + 12096484 = 6597^2 + 3478^2 .

It is a cyclic number.

It is not a de Polignac number, because 55616893 - 2²⁵ = 22062461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55616593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27808446 + 27808447.

It is an arithmetic number, because the mean of its divisors is an integer number (27808447).

Almost surely, 2^55616893 is an apocalyptic number.

It is an amenable number.

55616893 is a deficient number, since it is larger than the sum of its proper divisors (1).

55616893 is an equidigital number, since it uses as much as digits as its factorization.

55616893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 55616893 is about 7457.6734307691. The cubic root of 55616893 is about 381.7117902278.

The spelling of 55616893 in words is "fifty-five million, six hundred sixteen thousand, eight hundred ninety-three".