55493892 has 18 divisors (see below), whose sum is σ = 140276318. Its totient is φ = 18497952.

The previous prime is 55493891. The next prime is 55493909. The reversal of 55493892 is 29839455.

55493892 is a `hidden beast` number, since 554 + 9 + 3 + 8 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46457856 + 9036036 = 6816^2 + 3006^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (55493891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 770713 + ... + 770784.

Almost surely, 2^55493892 is an apocalyptic number.

It is an amenable number.

55493892 is an abundant number, since it is smaller than the sum of its proper divisors (84782426).

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

55493892 is a wasteful number, since it uses less digits than its factorization.

55493892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541507 (or 1541502 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 55493892 is about 7449.4222594776. The cubic root of 55493892 is about 381.4301876198.

The spelling of 55493892 in words is "fifty-five million, four hundred ninety-three thousand, eight hundred ninety-two".