55657163 has 4 divisors (see below), whose sum is σ = 55742280. Its totient is φ = 55572048.

The previous prime is 55657153. The next prime is 55657169. The reversal of 55657163 is 36175655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55657163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55657169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41570 + ... + 42887.

It is an arithmetic number, because the mean of its divisors is an integer number (13935570).

Almost surely, 2^55657163 is an apocalyptic number.

55657163 is a deficient number, since it is larger than the sum of its proper divisors (85117).

55657163 is an equidigital number, since it uses as much as digits as its factorization.

55657163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85116.

The product of its digits is 94500, while the sum is 38.

The square root of 55657163 is about 7460.3728459106. The cubic root of 55657163 is about 381.8038954886.

The spelling of 55657163 in words is "fifty-five million, six hundred fifty-seven thousand, one hundred sixty-three".