50450581 has 2 divisors, whose sum is σ = 50450582. Its totient is φ = 50450580.

The previous prime is 50450579. The next prime is 50450591. The reversal of 50450581 is 18505405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50339025 + 111556 = 7095^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 50450581 - 2¹ = 50450579 is a prime.

It is a super-2 number, since 2×50450581² = 5090522246475122, which contains 22 as substring.

Together with 50450579, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50450591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25225290 + 25225291.

It is an arithmetic number, because the mean of its divisors is an integer number (25225291).

Almost surely, 2^50450581 is an apocalyptic number.

It is an amenable number.

50450581 is a deficient number, since it is larger than the sum of its proper divisors (1).

50450581 is an equidigital number, since it uses as much as digits as its factorization.

50450581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 50450581 is about 7102.8572419837. The cubic root of 50450581 is about 369.5064786094.

Adding to 50450581 its reverse (18505405), we get a palindrome (68955986).

The spelling of 50450581 in words is "fifty million, four hundred fifty thousand, five hundred eighty-one".