50032721 has 2 divisors, whose sum is σ = 50032722. Its totient is φ = 50032720.

The previous prime is 50032709. The next prime is 50032771. The reversal of 50032721 is 12723005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44742721 + 5290000 = 6689^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 50032721 - 2⁶ = 50032657 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 50032693 and 50032702.

It is not a weakly prime, because it can be changed into another prime (50032771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25016360 + 25016361.

It is an arithmetic number, because the mean of its divisors is an integer number (25016361).

Almost surely, 2^50032721 is an apocalyptic number.

It is an amenable number.

50032721 is a deficient number, since it is larger than the sum of its proper divisors (1).

50032721 is an equidigital number, since it uses as much as digits as its factorization.

50032721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 50032721 is about 7073.3811575512. The cubic root of 50032721 is about 368.4834958030.

Adding to 50032721 its reverse (12723005), we get a palindrome (62755726).

The spelling of 50032721 in words is "fifty million, thirty-two thousand, seven hundred twenty-one".