55099806 has 16 divisors (see below), whose sum is σ = 110479248. Its totient is φ = 18320000.

The previous prime is 55099801. The next prime is 55099831. The reversal of 55099806 is 60899055.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55099801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9045 + ... + 13856.

It is an arithmetic number, because the mean of its divisors is an integer number (6904953).

Almost surely, 2^55099806 is an apocalyptic number.

55099806 is an abundant number, since it is smaller than the sum of its proper divisors (55379442).

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

55099806 is a wasteful number, since it uses less digits than its factorization.

55099806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23307.

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 55099806 is about 7422.9243563437. The cubic root of 55099806 is about 380.5251419040.

The spelling of 55099806 in words is "fifty-five million, ninety-nine thousand, eight hundred six".