55516690 has 8 divisors (see below), whose sum is σ = 99930060. Its totient is φ = 22206672.

The previous prime is 55516673. The next prime is 55516717. The reversal of 55516690 is 9661555.

55516690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47513449 + 8003241 = 6893^2 + 2829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55516690² = 6164205737112200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2775825 + ... + 2775844.

Almost surely, 2^55516690 is an apocalyptic number.

55516690 is a deficient number, since it is larger than the sum of its proper divisors (44413370).

55516690 is a wasteful number, since it uses less digits than its factorization.

55516690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551676.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 55516690 is about 7450.9522881307. The cubic root of 55516690 is about 381.4824135169.

The spelling of 55516690 in words is "fifty-five million, five hundred sixteen thousand, six hundred ninety".