50726721 has 16 divisors (see below), whose sum is σ = 68599808. Its totient is φ = 33339600.

The previous prime is 50726719. The next prime is 50726723. The reversal of 50726721 is 12762705.

It is an interprime number because it is at equal distance from previous prime (50726719) and next prime (50726723).

It is not a de Polignac number, because 50726721 - 2¹ = 50726719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50726723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80076 + ... + 80706.

It is an arithmetic number, because the mean of its divisors is an integer number (4287488).

Almost surely, 2^50726721 is an apocalyptic number.

It is an amenable number.

50726721 is a deficient number, since it is larger than the sum of its proper divisors (17873087).

50726721 is a wasteful number, since it uses less digits than its factorization.

50726721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 50726721 is about 7122.2693714855. The cubic root of 50726721 is about 370.1794138400.

The spelling of 50726721 in words is "fifty million, seven hundred twenty-six thousand, seven hundred twenty-one".