50521231 has 2 divisors, whose sum is σ = 50521232. Its totient is φ = 50521230.

The previous prime is 50521223. The next prime is 50521249. The reversal of 50521231 is 13212505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50521231 - 2³ = 50521223 is a prime.

It is a super-2 number, since 2×50521231² = 5104789563510722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 50521199 and 50521208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50521631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25260615 + 25260616.

It is an arithmetic number, because the mean of its divisors is an integer number (25260616).

Almost surely, 2^50521231 is an apocalyptic number.

50521231 is a deficient number, since it is larger than the sum of its proper divisors (1).

50521231 is an equidigital number, since it uses as much as digits as its factorization.

50521231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 50521231 is about 7107.8288527510. The cubic root of 50521231 is about 369.6788813563.

Adding to 50521231 its reverse (13212505), we get a palindrome (63733736).

It can be divided in two parts, 505 and 21231, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 50521231 in words is "fifty million, five hundred twenty-one thousand, two hundred thirty-one".