55069992 has 48 divisors (see below), whose sum is σ = 149516640. Its totient is φ = 18311328.

The previous prime is 55069969. The next prime is 55069997. The reversal of 55069992 is 29996055.

55069992 is a `hidden beast` number, since 550 + 6 + 9 + 9 + 92 = 666.

It is not an unprimeable number, because it can be changed into a prime (55069997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41613 + ... + 42915.

It is an arithmetic number, because the mean of its divisors is an integer number (3114930).

Almost surely, 2^55069992 is an apocalyptic number.

It is an amenable number.

55069992 is an abundant number, since it is smaller than the sum of its proper divisors (94446648).

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

55069992 is a wasteful number, since it uses less digits than its factorization.

55069992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 55069992 is about 7420.9158464438. The cubic root of 55069992 is about 380.4564966325.

The spelling of 55069992 in words is "fifty-five million, sixty-nine thousand, nine hundred ninety-two".