51253653 has 16 divisors (see below), whose sum is σ = 75240000. Its totient is φ = 30775680.

The previous prime is 51253627. The next prime is 51253667. The reversal of 51253653 is 35635215.

It is not a de Polignac number, because 51253653 - 2¹⁰ = 51252629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51253653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51253613) 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 15 ways as a sum of consecutive naturals, for example, 3528 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (4702500).

Almost surely, 2^51253653 is an apocalyptic number.

It is an amenable number.

51253653 is a deficient number, since it is larger than the sum of its proper divisors (23986347).

51253653 is a wasteful number, since it uses less digits than its factorization.

51253653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14372.

The product of its digits is 13500, while the sum is 30.

The square root of 51253653 is about 7159.1656636790. The cubic root of 51253653 is about 371.4567672242.

Adding to 51253653 its reverse (35635215), we get a palindrome (86888868).

It can be divided in two parts, 5125 and 3653, that added together give a palindrome (8778).

The spelling of 51253653 in words is "fifty-one million, two hundred fifty-three thousand, six hundred fifty-three".