50651213 has 2 divisors, whose sum is σ = 50651214. Its totient is φ = 50651212.

The previous prime is 50651173. The next prime is 50651219. The reversal of 50651213 is 31215605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33028009 + 17623204 = 5747^2 + 4198^2 .

It is a cyclic number.

It is not a de Polignac number, because 50651213 - 2⁶ = 50651149 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 (50651219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25325606 + 25325607.

It is an arithmetic number, because the mean of its divisors is an integer number (25325607).

Almost surely, 2^50651213 is an apocalyptic number.

It is an amenable number.

50651213 is a deficient number, since it is larger than the sum of its proper divisors (1).

50651213 is an equidigital number, since it uses as much as digits as its factorization.

50651213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 50651213 is about 7116.9665588648. The cubic root of 50651213 is about 369.9956488410.

Adding to 50651213 its reverse (31215605), we get a palindrome (81866818).

The spelling of 50651213 in words is "fifty million, six hundred fifty-one thousand, two hundred thirteen".