50670721 has 8 divisors (see below), whose sum is σ = 51286400. Its totient is φ = 50058000.

The previous prime is 50670707. The next prime is 50670733. The reversal of 50670721 is 12707605.

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 50670721 - 2⁵ = 50670689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50670721.

It is not an unprimeable number, because it can be changed into a prime (50670121) 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, 67096 + ... + 67846.

It is an arithmetic number, because the mean of its divisors is an integer number (6410800).

Almost surely, 2^50670721 is an apocalyptic number.

It is an amenable number.

50670721 is a deficient number, since it is larger than the sum of its proper divisors (615679).

50670721 is a wasteful number, since it uses less digits than its factorization.

50670721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 50670721 is about 7118.3369546545. The cubic root of 50670721 is about 370.0431432526.

The spelling of 50670721 in words is "fifty million, six hundred seventy thousand, seven hundred twenty-one".