55543404 has 24 divisors (see below), whose sum is σ = 148115968. Its totient is φ = 15869520.

The previous prime is 55543343. The next prime is 55543451. The reversal of 55543404 is 40434555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330532 + ... + 330699.

Almost surely, 2^55543404 is an apocalyptic number.

It is an amenable number.

55543404 is an abundant number, since it is smaller than the sum of its proper divisors (92572564).

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

55543404 is a wasteful number, since it uses less digits than its factorization.

55543404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661245 (or 661243 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 55543404 is about 7452.7447292927. The cubic root of 55543404 is about 381.5435920384.

Adding to 55543404 its reverse (40434555), we get a palindrome (95977959).

The spelling of 55543404 in words is "fifty-five million, five hundred forty-three thousand, four hundred four".