51512351497 has 8 divisors (see below), whose sum is σ = 52772882400. Its totient is φ = 50252017440.

The previous prime is 51512351459. The next prime is 51512351531. The reversal of 51512351497 is 79415321515.

51512351497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51512351497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51512351417) 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, 576754 + ... + 660052.

It is an arithmetic number, because the mean of its divisors is an integer number (6596610300).

Almost surely, 2^51512351497 is an apocalyptic number.

It is an amenable number.

51512351497 is a deficient number, since it is larger than the sum of its proper divisors (1260530903).

51512351497 is a wasteful number, since it uses less digits than its factorization.

51512351497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98423.

The product of its digits is 189000, while the sum is 43.

The spelling of 51512351497 in words is "fifty-one billion, five hundred twelve million, three hundred fifty-one thousand, four hundred ninety-seven".