51256653001 has 8 divisors (see below), whose sum is σ = 53956954400. Its totient is φ = 48556609920.

The previous prime is 51256652977. The next prime is 51256653017. The reversal of 51256653001 is 10035665215.

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 51256653001 - 2⁵ = 51256652969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51256653101) 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, 446506 + ... + 549436.

It is an arithmetic number, because the mean of its divisors is an integer number (6744619300).

Almost surely, 2^51256653001 is an apocalyptic number.

It is an amenable number.

51256653001 is a deficient number, since it is larger than the sum of its proper divisors (2700301399).

51256653001 is a wasteful number, since it uses less digits than its factorization.

51256653001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129159.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 51256653001 in words is "fifty-one billion, two hundred fifty-six million, six hundred fifty-three thousand, one".