55869930 has 24 divisors (see below), whose sum is σ = 145262052. Its totient is φ = 14898624.

The previous prime is 55869907. The next prime is 55869949. The reversal of 55869930 is 3996855.

55869930 is a `hidden beast` number, since 558 + 6 + 9 + 93 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53890281 + 1979649 = 7341^2 + 1407^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310299 + ... + 310478.

Almost surely, 2^55869930 is an apocalyptic number.

55869930 is an abundant number, since it is smaller than the sum of its proper divisors (89392122).

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

55869930 is a wasteful number, since it uses less digits than its factorization.

55869930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620790 (or 620787 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 55869930 is about 7474.6190538381. The cubic root of 55869930 is about 382.2897986414.

The spelling of 55869930 in words is "fifty-five million, eight hundred sixty-nine thousand, nine hundred thirty".