51276221653 has 8 divisors (see below), whose sum is σ = 52699841568. Its totient is φ = 49863108624.

The previous prime is 51276221651. The next prime is 51276221657. The reversal of 51276221653 is 35612267215.

51276221653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51276221653 - 2¹ = 51276221651 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 (51276221651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616826 + ... + 2636347.

It is an arithmetic number, because the mean of its divisors is an integer number (6587480196).

Almost surely, 2^51276221653 is an apocalyptic number.

It is an amenable number.

51276221653 is a deficient number, since it is larger than the sum of its proper divisors (1423619915).

51276221653 is a wasteful number, since it uses less digits than its factorization.

51276221653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253443.

The product of its digits is 151200, while the sum is 40.

Adding to 51276221653 its reverse (35612267215), we get a palindrome (86888488868).

The spelling of 51276221653 in words is "fifty-one billion, two hundred seventy-six million, two hundred twenty-one thousand, six hundred fifty-three".