55890899 has 4 divisors (see below), whose sum is σ = 55924536. Its totient is φ = 55857264.

The previous prime is 55890889. The next prime is 55890911. The reversal of 55890899 is 99809855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55890899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55890899.

It is not an unprimeable number, because it can be changed into a prime (55890889) 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, 14189 + ... + 17694.

It is an arithmetic number, because the mean of its divisors is an integer number (13981134).

Almost surely, 2^55890899 is an apocalyptic number.

55890899 is a deficient number, since it is larger than the sum of its proper divisors (33637).

55890899 is a wasteful number, since it uses less digits than its factorization.

55890899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33636.

The product of its (nonzero) digits is 1166400, while the sum is 53.

The square root of 55890899 is about 7476.0216024300. The cubic root of 55890899 is about 382.3376194287.

The spelling of 55890899 in words is "fifty-five million, eight hundred ninety thousand, eight hundred ninety-nine".