55560999 has 16 divisors (see below), whose sum is σ = 80192000. Its totient is φ = 34014816.

The previous prime is 55560991. The next prime is 55561001. The reversal of 55560999 is 99906555.

It is not a de Polignac number, because 55560999 - 2³ = 55560991 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55560991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4182 + ... + 11340.

It is an arithmetic number, because the mean of its divisors is an integer number (5012000).

Almost surely, 2^55560999 is an apocalyptic number.

55560999 is a deficient number, since it is larger than the sum of its proper divisors (24631001).

55560999 is a wasteful number, since it uses less digits than its factorization.

55560999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7374.

The product of its (nonzero) digits is 546750, while the sum is 48.

The square root of 55560999 is about 7453.9250734093. The cubic root of 55560999 is about 381.5838761542.

The spelling of 55560999 in words is "fifty-five million, five hundred sixty thousand, nine hundred ninety-nine".