55446630 has 16 divisors (see below), whose sum is σ = 133071984. Its totient is φ = 14785760.

The previous prime is 55446581. The next prime is 55446641. The reversal of 55446630 is 3664455.

It is a junction number, because it is equal to n+sod(n) for n = 55446591 and 55446600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924081 + ... + 924140.

It is an arithmetic number, because the mean of its divisors is an integer number (8316999).

Almost surely, 2^55446630 is an apocalyptic number.

55446630 is an abundant number, since it is smaller than the sum of its proper divisors (77625354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55446630 is a wasteful number, since it uses less digits than its factorization.

55446630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848231.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 55446630 is about 7446.2493914722. The cubic root of 55446630 is about 381.3218737557.

The spelling of 55446630 in words is "fifty-five million, four hundred forty-six thousand, six hundred thirty".