55388460 has 24 divisors (see below), whose sum is σ = 155087856. Its totient is φ = 14770240.

The previous prime is 55388453. The next prime is 55388471. The reversal of 55388460 is 6488355.

It is a happy number.

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, 461511 + ... + 461630.

It is an arithmetic number, because the mean of its divisors is an integer number (6461994).

Almost surely, 2^55388460 is an apocalyptic number.

It is an amenable number.

55388460 is an abundant number, since it is smaller than the sum of its proper divisors (99699396).

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

55388460 is a wasteful number, since it uses less digits than its factorization.

55388460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923153 (or 923151 counting only the distinct ones).

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

The square root of 55388460 is about 7442.3423732048. The cubic root of 55388460 is about 381.1884766799.

The spelling of 55388460 in words is "fifty-five million, three hundred eighty-eight thousand, four hundred sixty".