55489404 has 24 divisors (see below), whose sum is σ = 130228560. Its totient is φ = 18388864.

The previous prime is 55489403. The next prime is 55489433. The reversal of 55489404 is 40498455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55489403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11289 + ... + 15440.

It is an arithmetic number, because the mean of its divisors is an integer number (5426190).

Almost surely, 2^55489404 is an apocalyptic number.

It is an amenable number.

55489404 is an abundant number, since it is smaller than the sum of its proper divisors (74739156).

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

55489404 is a wasteful number, since it uses less digits than its factorization.

55489404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26909 (or 26907 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 55489404 is about 7449.1210219730. The cubic root of 55489404 is about 381.4199047774.

The spelling of 55489404 in words is "fifty-five million, four hundred eighty-nine thousand, four hundred four".