51426853 has 4 divisors (see below), whose sum is σ = 54451980. Its totient is φ = 48401728.

The previous prime is 51426847. The next prime is 51426871. The reversal of 51426853 is 35862415.

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 46485124 + 4941729 = 6818^2 + 2223^2 .

It is a cyclic number.

It is not a de Polignac number, because 51426853 - 2²¹ = 49329701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51426553) 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, 1512538 + ... + 1512571.

It is an arithmetic number, because the mean of its divisors is an integer number (13612995).

Almost surely, 2^51426853 is an apocalyptic number.

It is an amenable number.

51426853 is a deficient number, since it is larger than the sum of its proper divisors (3025127).

51426853 is a wasteful number, since it uses less digits than its factorization.

51426853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025126.

The product of its digits is 28800, while the sum is 34.

The square root of 51426853 is about 7171.2518432977. The cubic root of 51426853 is about 371.8747145256.

The spelling of 51426853 in words is "fifty-one million, four hundred twenty-six thousand, eight hundred fifty-three".