50647813 has 2 divisors, whose sum is σ = 50647814. Its totient is φ = 50647812.

The previous prime is 50647801. The next prime is 50647823. The reversal of 50647813 is 31874605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47087044 + 3560769 = 6862^2 + 1887^2 .

It is a cyclic number.

It is not a de Polignac number, because 50647813 - 2⁵ = 50647781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50647823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25323906 + 25323907.

It is an arithmetic number, because the mean of its divisors is an integer number (25323907).

Almost surely, 2^50647813 is an apocalyptic number.

It is an amenable number.

50647813 is a deficient number, since it is larger than the sum of its proper divisors (1).

50647813 is an equidigital number, since it uses as much as digits as its factorization.

50647813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 50647813 is about 7116.7276890436. The cubic root of 50647813 is about 369.9873699122.

The spelling of 50647813 in words is "fifty million, six hundred forty-seven thousand, eight hundred thirteen".