51236225656121 has 8 divisors (see below), whose sum is σ = 55894295048544. Its totient is φ = 46578194713120.

The previous prime is 51236225656079. The next prime is 51236225656151. The reversal of 51236225656121 is 12165652263215.

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-51236225656121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51236225656151) 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, 6790055 + ... + 12189228.

It is an arithmetic number, because the mean of its divisors is an integer number (6986786881068).

Almost surely, 2^{51236225656121} is an apocalyptic number.

It is an amenable number.

51236225656121 is a deficient number, since it is larger than the sum of its proper divisors (4658069392423).

51236225656121 is a wasteful number, since it uses less digits than its factorization.

51236225656121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19224711.

The product of its digits is 1296000, while the sum is 47.

The spelling of 51236225656121 in words is "fifty-one trillion, two hundred thirty-six billion, two hundred twenty-five million, six hundred fifty-six thousand, one hundred twenty-one".