51515001107 has 4 divisors (see below), whose sum is σ = 51517267656. Its totient is φ = 51512734560.

The previous prime is 51515001103. The next prime is 51515001119. The reversal of 51515001107 is 70110051515.

51515001107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51515001107 - 2² = 51515001103 is a prime.

It is a super-2 number, since 2×51515001107² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51515001103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098833 + ... + 1144754.

It is an arithmetic number, because the mean of its divisors is an integer number (12879316914).

Almost surely, 2^51515001107 is an apocalyptic number.

51515001107 is a deficient number, since it is larger than the sum of its proper divisors (2266549).

51515001107 is a wasteful number, since it uses less digits than its factorization.

51515001107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266548.

The product of its (nonzero) digits is 875, while the sum is 26.

The spelling of 51515001107 in words is "fifty-one billion, five hundred fifteen million, one thousand, one hundred seven".