56105099 has 4 divisors (see below), whose sum is σ = 56873736. Its totient is φ = 55336464.

The previous prime is 56105087. The next prime is 56105131. The reversal of 56105099 is 99050165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99050165 = 5 ⋅19810033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56105099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56105039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384209 + ... + 384354.

It is an arithmetic number, because the mean of its divisors is an integer number (14218434).

Almost surely, 2^56105099 is an apocalyptic number.

56105099 is a deficient number, since it is larger than the sum of its proper divisors (768637).

56105099 is an equidigital number, since it uses as much as digits as its factorization.

56105099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768636.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 56105099 is about 7490.3337041817. Note that the first 3 decimals coincide. The cubic root of 56105099 is about 382.8254288312.

The spelling of 56105099 in words is "fifty-six million, one hundred five thousand, ninety-nine".