55413516 has 12 divisors (see below), whose sum is σ = 129298232. Its totient is φ = 18471168.

The previous prime is 55413511. The next prime is 55413563. The reversal of 55413516 is 61531455.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (55413511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2308885 + ... + 2308908.

Almost surely, 2^55413516 is an apocalyptic number.

It is an amenable number.

55413516 is an abundant number, since it is smaller than the sum of its proper divisors (73884716).

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

55413516 is a wasteful number, since it uses less digits than its factorization.

55413516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617800 (or 4617798 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 55413516 is about 7444.0255238681. The cubic root of 55413516 is about 381.2459472471.

The spelling of 55413516 in words is "fifty-five million, four hundred thirteen thousand, five hundred sixteen".