50542021 has 2 divisors, whose sum is σ = 50542022. Its totient is φ = 50542020.

The previous prime is 50542013. The next prime is 50542031. The reversal of 50542021 is 12024505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50211396 + 330625 = 7086^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 50542021 - 2³ = 50542013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50542021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50542001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25271010 + 25271011.

It is an arithmetic number, because the mean of its divisors is an integer number (25271011).

Almost surely, 2^50542021 is an apocalyptic number.

It is an amenable number.

50542021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50542021 is an equidigital number, since it uses as much as digits as its factorization.

50542021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 50542021 is about 7109.2911742311. The cubic root of 50542021 is about 369.7295832744.

Adding to 50542021 its reverse (12024505), we get a palindrome (62566526).

The spelling of 50542021 in words is "fifty million, five hundred forty-two thousand, twenty-one".