50638513 has 2 divisors, whose sum is σ = 50638514. Its totient is φ = 50638512.

The previous prime is 50638507. The next prime is 50638517. The reversal of 50638513 is 31583605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45589504 + 5049009 = 6752^2 + 2247^2 .

It is a cyclic number.

It is not a de Polignac number, because 50638513 - 2⁵ = 50638481 is a prime.

It is not a weakly prime, because it can be changed into another prime (50638517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25319256 + 25319257.

It is an arithmetic number, because the mean of its divisors is an integer number (25319257).

Almost surely, 2^50638513 is an apocalyptic number.

It is an amenable number.

50638513 is a deficient number, since it is larger than the sum of its proper divisors (1).

50638513 is an equidigital number, since it uses as much as digits as its factorization.

50638513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 50638513 is about 7116.0742688648. The cubic root of 50638513 is about 369.9647227141.

The spelling of 50638513 in words is "fifty million, six hundred thirty-eight thousand, five hundred thirteen".