51021501441 has 4 divisors (see below), whose sum is σ = 68028668592. Its totient is φ = 34014334292.

The previous prime is 51021501409. The next prime is 51021501493. The reversal of 51021501441 is 14410512015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51021501441 - 2⁵ = 51021501409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51021505441) 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, 8503583571 + ... + 8503583576.

It is an arithmetic number, because the mean of its divisors is an integer number (17007167148).

Almost surely, 2^51021501441 is an apocalyptic number.

It is an amenable number.

51021501441 is a deficient number, since it is larger than the sum of its proper divisors (17007167151).

51021501441 is a wasteful number, since it uses less digits than its factorization.

51021501441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17007167150.

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 51021501441 in words is "fifty-one billion, twenty-one million, five hundred one thousand, four hundred forty-one".