55224666642257 has 32 divisors (see below), whose sum is σ = 65408386264320. Its totient is φ = 45674852203008.

The previous prime is 55224666642251. The next prime is 55224666642269. The reversal of 55224666642257 is 75224666642255.

It is not a de Polignac number, because 55224666642257 - 2⁶ = 55224666642193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55224666642257.

It is not an unprimeable number, because it can be changed into a prime (55224666642251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277666913 + ... + 277865729.

It is an arithmetic number, because the mean of its divisors is an integer number (2044012070760).

Almost surely, 2^{55224666642257} is an apocalyptic number.

It is an amenable number.

55224666642257 is a deficient number, since it is larger than the sum of its proper divisors (10183719622063).

55224666642257 is an equidigital number, since it uses as much as digits as its factorization.

55224666642257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200538 (or 200480 counting only the distinct ones).

The product of its digits is 290304000, while the sum is 62.

The spelling of 55224666642257 in words is "fifty-five trillion, two hundred twenty-four billion, six hundred sixty-six million, six hundred forty-two thousand, two hundred fifty-seven".