55016555 has 16 divisors (see below), whose sum is σ = 73557504. Its totient is φ = 39158880.

The previous prime is 55016531. The next prime is 55016587. The reversal of 55016555 is 55561055.

It is not a de Polignac number, because 55016555 - 2¹⁸ = 54754411 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8057 + ... + 13226.

It is an arithmetic number, because the mean of its divisors is an integer number (4597344).

Almost surely, 2^55016555 is an apocalyptic number.

55016555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55016555 is a deficient number, since it is larger than the sum of its proper divisors (18540949).

55016555 is a wasteful number, since it uses less digits than its factorization.

55016555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21346.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 55016555 is about 7417.3145409912. The cubic root of 55016555 is about 380.3333985381. Note that the first 4 decimals are identical.

The spelling of 55016555 in words is "fifty-five million, sixteen thousand, five hundred fifty-five".