51392653 has 4 divisors (see below), whose sum is σ = 55345948. Its totient is φ = 47439360.

The previous prime is 51392629. The next prime is 51392659. The reversal of 51392653 is 35629315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35629315 = 5 ⋅7125863.

It can be written as a sum of positive squares in 2 ways, for example, as 27008809 + 24383844 = 5197^2 + 4938^2 .

It is a cyclic number.

It is not a de Polignac number, because 51392653 - 2²⁵ = 17838221 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 (51392659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1976628 + ... + 1976653.

It is an arithmetic number, because the mean of its divisors is an integer number (13836487).

Almost surely, 2^51392653 is an apocalyptic number.

It is an amenable number.

51392653 is a deficient number, since it is larger than the sum of its proper divisors (3953295).

51392653 is a wasteful number, since it uses less digits than its factorization.

51392653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953294.

The product of its digits is 24300, while the sum is 34.

The square root of 51392653 is about 7168.8669258119. The cubic root of 51392653 is about 371.7922612623.

The spelling of 51392653 in words is "fifty-one million, three hundred ninety-two thousand, six hundred fifty-three".