50878213 has 2 divisors, whose sum is σ = 50878214. Its totient is φ = 50878212.

The previous prime is 50878211. The next prime is 50878279. The reversal of 50878213 is 31287805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37173409 + 13704804 = 6097^2 + 3702^2 .

It is a cyclic number.

It is not a de Polignac number, because 50878213 - 2¹ = 50878211 is a prime.

Together with 50878211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50878211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25439106 + 25439107.

It is an arithmetic number, because the mean of its divisors is an integer number (25439107).

Almost surely, 2^50878213 is an apocalyptic number.

It is an amenable number.

50878213 is a deficient number, since it is larger than the sum of its proper divisors (1).

50878213 is an equidigital number, since it uses as much as digits as its factorization.

50878213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 50878213 is about 7132.8965364710. The cubic root of 50878213 is about 370.5475530604.

It can be divided in two parts, 508782 and 13, that multiplied together give a palindrome (6614166).

The spelling of 50878213 in words is "fifty million, eight hundred seventy-eight thousand, two hundred thirteen".