55016890 has 16 divisors (see below), whose sum is σ = 99198720. Its totient is φ = 21969360.

The previous prime is 55016887. The next prime is 55016911. The reversal of 55016890 is 9861055.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951 + ... + 10669.

It is an arithmetic number, because the mean of its divisors is an integer number (6199920).

Almost surely, 2^55016890 is an apocalyptic number.

55016890 is a deficient number, since it is larger than the sum of its proper divisors (44181830).

55016890 is a wasteful number, since it uses less digits than its factorization.

55016890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9357.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 55016890 is about 7417.3371232539. The cubic root of 55016890 is about 380.3341704962.

The spelling of 55016890 in words is "fifty-five million, sixteen thousand, eight hundred ninety".