55460809 has 4 divisors (see below), whose sum is σ = 55596820. Its totient is φ = 55324800.

The previous prime is 55460807. The next prime is 55460813. The reversal of 55460809 is 90806455.

55460809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 35462025 + 19998784 = 5955^2 + 4472^2 .

It is a cyclic number.

It is not a de Polignac number, because 55460809 - 2¹ = 55460807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55460807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67392 + ... + 68209.

It is an arithmetic number, because the mean of its divisors is an integer number (13899205).

Almost surely, 2^55460809 is an apocalyptic number.

It is an amenable number.

55460809 is a deficient number, since it is larger than the sum of its proper divisors (136011).

55460809 is a wasteful number, since it uses less digits than its factorization.

55460809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136010.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 55460809 is about 7447.2014206680. The cubic root of 55460809 is about 381.3543752924.

The spelling of 55460809 in words is "fifty-five million, four hundred sixty thousand, eight hundred nine".