50878621 has 2 divisors, whose sum is σ = 50878622. Its totient is φ = 50878620.

The previous prime is 50878609. The next prime is 50878627. The reversal of 50878621 is 12687805.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46922500 + 3956121 = 6850^2 + 1989^2 .

It is a cyclic number.

It is not a de Polignac number, because 50878621 - 2²⁵ = 17324189 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 (50878627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25439310 + 25439311.

It is an arithmetic number, because the mean of its divisors is an integer number (25439311).

Almost surely, 2^50878621 is an apocalyptic number.

It is an amenable number.

50878621 is a deficient number, since it is larger than the sum of its proper divisors (1).

50878621 is an equidigital number, since it uses as much as digits as its factorization.

50878621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 50878621 is about 7132.9251362958. The cubic root of 50878621 is about 370.5485435498.

The spelling of 50878621 in words is "fifty million, eight hundred seventy-eight thousand, six hundred twenty-one".