51136506253 has 8 divisors (see below), whose sum is σ = 58544435520. Its totient is φ = 43754255520.

The previous prime is 51136506247. The next prime is 51136506259. The reversal of 51136506253 is 35260563115.

It is an interprime number because it is at equal distance from previous prime (51136506247) and next prime (51136506259).

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 51136506253 - 2⁵ = 51136506221 is a prime.

It is a super-2 number, since 2×51136506253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51136506259) 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, 6415363 + ... + 6423328.

It is an arithmetic number, because the mean of its divisors is an integer number (7318054440).

Almost surely, 2^51136506253 is an apocalyptic number.

It is an amenable number.

51136506253 is a deficient number, since it is larger than the sum of its proper divisors (7407929267).

51136506253 is a wasteful number, since it uses less digits than its factorization.

51136506253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12839267.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 51136506253 in words is "fifty-one billion, one hundred thirty-six million, five hundred six thousand, two hundred fifty-three".