55208992 has 24 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 27253824.

The previous prime is 55208981. The next prime is 55208999. The reversal of 55208992 is 29980255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55208999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8392 + ... + 13447.

It is an arithmetic number, because the mean of its divisors is an integer number (4586400).

Almost surely, 2^55208992 is an apocalyptic number.

It is an amenable number.

55208992 is a deficient number, since it is larger than the sum of its proper divisors (54864608).

55208992 is a wasteful number, since it uses less digits than its factorization.

55208992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21928 (or 21920 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 55208992 is about 7430.2753650184. The cubic root of 55208992 is about 380.7763261181.

The spelling of 55208992 in words is "fifty-five million, two hundred eight thousand, nine hundred ninety-two".