55669120 has 64 divisors (see below), whose sum is σ = 143342640. Its totient is φ = 20551680.

The previous prime is 55669109. The next prime is 55669139. The reversal of 55669120 is 2196655.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 4975 + ... + 11665.

Almost surely, 2^55669120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55669120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71671320).

55669120 is an abundant number, since it is smaller than the sum of its proper divisors (87673520).

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

55669120 is a wasteful number, since it uses less digits than its factorization.

55669120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6723 (or 6711 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 55669120 is about 7461.1741703300. The cubic root of 55669120 is about 381.8312349004.

The spelling of 55669120 in words is "fifty-five million, six hundred sixty-nine thousand, one hundred twenty".