50721701 has 2 divisors, whose sum is σ = 50721702. Its totient is φ = 50721700.

The previous prime is 50721679. The next prime is 50721707. The reversal of 50721701 is 10712705.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 948676 = 7055^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 50721701 - 2⁶ = 50721637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50721707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25360850 + 25360851.

It is an arithmetic number, because the mean of its divisors is an integer number (25360851).

Almost surely, 2^50721701 is an apocalyptic number.

It is an amenable number.

50721701 is a deficient number, since it is larger than the sum of its proper divisors (1).

50721701 is an equidigital number, since it uses as much as digits as its factorization.

50721701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 50721701 is about 7121.9169470024. The cubic root of 50721701 is about 370.1672022486.

The spelling of 50721701 in words is "fifty million, seven hundred twenty-one thousand, seven hundred one".