50045521 has 2 divisors, whose sum is σ = 50045522. Its totient is φ = 50045520.

The previous prime is 50045519. The next prime is 50045579. The reversal of 50045521 is 12554005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49505296 + 540225 = 7036^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 50045521 - 2¹ = 50045519 is a prime.

It is a super-2 number, since 2×50045521² = 5009108344322882, which contains 22 as substring.

Together with 50045519, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 50045492 and 50045501.

It is not a weakly prime, because it can be changed into another prime (50045591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25022760 + 25022761.

It is an arithmetic number, because the mean of its divisors is an integer number (25022761).

Almost surely, 2^50045521 is an apocalyptic number.

It is an amenable number.

50045521 is a deficient number, since it is larger than the sum of its proper divisors (1).

50045521 is an equidigital number, since it uses as much as digits as its factorization.

50045521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 50045521 is about 7074.2859003577. The cubic root of 50045521 is about 368.5149164846.

Adding to 50045521 its reverse (12554005), we get a palindrome (62599526).

The spelling of 50045521 in words is "fifty million, forty-five thousand, five hundred twenty-one".