51001500421 has 8 divisors (see below), whose sum is σ = 52649561600. Its totient is φ = 49353617520.

The previous prime is 51001500419. The next prime is 51001500469. The reversal of 51001500421 is 12400510015.

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 51001500421 - 2¹ = 51001500419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51001500721) 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, 778195 + ... + 841183.

It is an arithmetic number, because the mean of its divisors is an integer number (6581195200).

Almost surely, 2^51001500421 is an apocalyptic number.

It is an amenable number.

51001500421 is a deficient number, since it is larger than the sum of its proper divisors (1648061179).

51001500421 is a wasteful number, since it uses less digits than its factorization.

51001500421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89139.

The product of its (nonzero) digits is 200, while the sum is 19.

The spelling of 51001500421 in words is "fifty-one billion, one million, five hundred thousand, four hundred twenty-one".