51404430253 has 16 divisors (see below), whose sum is σ = 56186380800. Its totient is φ = 46640724480.

The previous prime is 51404430229. The next prime is 51404430293. The reversal of 51404430253 is 35203440415.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51404430253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404430293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19521825 + ... + 19524457.

It is an arithmetic number, because the mean of its divisors is an integer number (3511648800).

Almost surely, 2^51404430253 is an apocalyptic number.

It is an amenable number.

51404430253 is a deficient number, since it is larger than the sum of its proper divisors (4781950547).

51404430253 is a wasteful number, since it uses less digits than its factorization.

51404430253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5412.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 51404430253 its reverse (35203440415), we get a palindrome (86607870668).

The spelling of 51404430253 in words is "fifty-one billion, four hundred four million, four hundred thirty thousand, two hundred fifty-three".