51502542415153 has 4 divisors (see below), whose sum is σ = 51504722071540. Its totient is φ = 51500362758768.

The previous prime is 51502542415127. The next prime is 51502542415169. The reversal of 51502542415153 is 35151424520515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1520074465569 + 49982467949584 = 1232913^2 + 7069828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51502542415153 is a prime.

It is a super-3 number, since 3×51502542415153³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51502542415193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089792750 + ... + 1089840007.

It is an arithmetic number, because the mean of its divisors is an integer number (12876180517885).

Almost surely, 2^{51502542415153} is an apocalyptic number.

It is an amenable number.

51502542415153 is a deficient number, since it is larger than the sum of its proper divisors (2179656387).

51502542415153 is a wasteful number, since it uses less digits than its factorization.

51502542415153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179656386.

The product of its (nonzero) digits is 600000, while the sum is 43.

Adding to 51502542415153 its reverse (35151424520515), we get a palindrome (86653966935668).

The spelling of 51502542415153 in words is "fifty-one trillion, five hundred two billion, five hundred forty-two million, four hundred fifteen thousand, one hundred fifty-three".