51513240101 has 8 divisors (see below), whose sum is σ = 52138144800. Its totient is φ = 50888437072.

The previous prime is 51513240041. The next prime is 51513240109. The reversal of 51513240101 is 10104231515.

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 51513240101 - 2²⁶ = 51446131237 is a prime.

It is a super-2 number, since 2×51513240101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51513240109) 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, 1690466 + ... + 1720668.

It is an arithmetic number, because the mean of its divisors is an integer number (6517268100).

Almost surely, 2^51513240101 is an apocalyptic number.

It is an amenable number.

51513240101 is a deficient number, since it is larger than the sum of its proper divisors (624904699).

51513240101 is a wasteful number, since it uses less digits than its factorization.

51513240101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50835.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 51513240101 its reverse (10104231515), we get a palindrome (61617471616).

The spelling of 51513240101 in words is "fifty-one billion, five hundred thirteen million, two hundred forty thousand, one hundred one".