55512305 has 4 divisors (see below), whose sum is σ = 66614772. Its totient is φ = 44409840.

The previous prime is 55512299. The next prime is 55512329. The reversal of 55512305 is 50321555.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21418384 + 34093921 = 4628^2 + 5839^2 .

It is not a de Polignac number, because 55512305 - 2⁶ = 55512241 is a prime.

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, 5551226 + ... + 5551235.

It is an arithmetic number, because the mean of its divisors is an integer number (16653693).

Almost surely, 2^55512305 is an apocalyptic number.

It is an amenable number.

55512305 is a deficient number, since it is larger than the sum of its proper divisors (11102467).

55512305 is a wasteful number, since it uses less digits than its factorization.

55512305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102466.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 55512305 is about 7450.6580246311. The cubic root of 55512305 is about 381.4723694237.

The spelling of 55512305 in words is "fifty-five million, five hundred twelve thousand, three hundred five".