55446502221 has 48 divisors (see below), whose sum is σ = 93264238080. Its totient is φ = 31386852000.

The previous prime is 55446502171. The next prime is 55446502231. The reversal of 55446502221 is 12220564455.

55446502221 is a `hidden beast` number, since 554 + 4 + 65 + 0 + 22 + 21 = 666.

It is not a de Polignac number, because 55446502221 - 2²⁵ = 55412947789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55446502231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74035 + ... + 341136.

It is an arithmetic number, because the mean of its divisors is an integer number (1943004960).

Almost surely, 2^55446502221 is an apocalyptic number.

It is an amenable number.

55446502221 is a deficient number, since it is larger than the sum of its proper divisors (37817735859).

55446502221 is a wasteful number, since it uses less digits than its factorization.

55446502221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415278 (or 415275 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 55446502221 in words is "fifty-five billion, four hundred forty-six million, five hundred two thousand, two hundred twenty-one".