51535253515 has 8 divisors (see below), whose sum is σ = 61912505088. Its totient is φ = 41181402240.

The previous prime is 51535253489. The next prime is 51535253533.

51535253515 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 51535253515 - 2²⁵ = 51501699083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5845227 + ... + 5854036.

It is an arithmetic number, because the mean of its divisors is an integer number (7739063136).

Almost surely, 2^51535253515 is an apocalyptic number.

51535253515 is a deficient number, since it is larger than the sum of its proper divisors (10377251573).

51535253515 is a wasteful number, since it uses less digits than its factorization.

51535253515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11700149.

The product of its digits is 281250, while the sum is 40.

The spelling of 51535253515 in words is "fifty-one billion, five hundred thirty-five million, two hundred fifty-three thousand, five hundred fifteen".