55312105 has 4 divisors (see below), whose sum is σ = 66374532. Its totient is φ = 44249680.

The previous prime is 55312099. The next prime is 55312111. The reversal of 55312105 is 50121355.

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

It is an interprime number because it is at equal distance from previous prime (55312099) and next prime (55312111).

It can be written as a sum of positive squares in 2 ways, for example, as 20313049 + 34999056 = 4507^2 + 5916^2 .

It is not a de Polignac number, because 55312105 - 2⁵ = 55312073 is a prime.

It is a Smith number, since the sum of its digits (22) 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5531206 + ... + 5531215.

It is an arithmetic number, because the mean of its divisors is an integer number (16593633).

Almost surely, 2^55312105 is an apocalyptic number.

It is an amenable number.

55312105 is a deficient number, since it is larger than the sum of its proper divisors (11062427).

55312105 is a wasteful number, since it uses less digits than its factorization.

55312105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11062426.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55312105 is about 7437.2108347149. The cubic root of 55312105 is about 381.0132354185.

Subtracting from 55312105 its product of nonzero digits (750), we obtain a palindrome (55311355).

The spelling of 55312105 in words is "fifty-five million, three hundred twelve thousand, one hundred five".