55161516 has 24 divisors (see below), whose sum is σ = 128988160. Its totient is φ = 18347472.

The previous prime is 55161473. The next prime is 55161553. The reversal of 55161516 is 61516155.

55161516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125 + ... + 10563.

Almost surely, 2^55161516 is an apocalyptic number.

It is an amenable number.

55161516 is an abundant number, since it is smaller than the sum of its proper divisors (73826644).

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

55161516 is a wasteful number, since it uses less digits than its factorization.

55161516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933 (or 9931 counting only the distinct ones).

The product of its digits is 4500, while the sum is 30.

The square root of 55161516 is about 7427.0799107051. The cubic root of 55161516 is about 380.6671475190.

The spelling of 55161516 in words is "fifty-five million, one hundred sixty-one thousand, five hundred sixteen".