49500221 has 2 divisors, whose sum is σ = 49500222. Its totient is φ = 49500220.

The previous prime is 49500197. The next prime is 49500229. The reversal of 49500221 is 12200594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30096196 + 19404025 = 5486^2 + 4405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49500221 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49500229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24750110 + 24750111.

It is an arithmetic number, because the mean of its divisors is an integer number (24750111).

Almost surely, 2^49500221 is an apocalyptic number.

It is an amenable number.

49500221 is a deficient number, since it is larger than the sum of its proper divisors (1).

49500221 is an equidigital number, since it uses as much as digits as its factorization.

49500221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 49500221 is about 7035.6393455037. The cubic root of 49500221 is about 367.1715695313.

The spelling of 49500221 in words is "forty-nine million, five hundred thousand, two hundred twenty-one".