55491892 has 6 divisors (see below), whose sum is σ = 97110818. Its totient is φ = 27745944.

The previous prime is 55491889. The next prime is 55491907. The reversal of 55491892 is 29819455.

It can be written as a sum of positive squares in only one way, i.e., 51782416 + 3709476 = 7196^2 + 1926^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6936483 + ... + 6936490.

Almost surely, 2^55491892 is an apocalyptic number.

It is an amenable number.

55491892 is a deficient number, since it is larger than the sum of its proper divisors (41618926).

55491892 is a wasteful number, since it uses less digits than its factorization.

55491892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13872977 (or 13872975 counting only the distinct ones).

The product of its digits is 129600, while the sum is 43.

The square root of 55491892 is about 7449.2880196701. The cubic root of 55491892 is about 381.4256053164.

The spelling of 55491892 in words is "fifty-five million, four hundred ninety-one thousand, eight hundred ninety-two".