50684581 has 2 divisors, whose sum is σ = 50684582. Its totient is φ = 50684580.

The previous prime is 50684567. The next prime is 50684639. The reversal of 50684581 is 18548605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49702500 + 982081 = 7050^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 50684581 - 2¹⁵ = 50651813 is a prime.

It is a super-2 number, since 2×50684581² = 5137853502291122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50684581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50684551) 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, 25342290 + 25342291.

It is an arithmetic number, because the mean of its divisors is an integer number (25342291).

Almost surely, 2^50684581 is an apocalyptic number.

It is an amenable number.

50684581 is a deficient number, since it is larger than the sum of its proper divisors (1).

50684581 is an equidigital number, since it uses as much as digits as its factorization.

50684581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 50684581 is about 7119.3104300908. The cubic root of 50684581 is about 370.0768795688.

The spelling of 50684581 in words is "fifty million, six hundred eighty-four thousand, five hundred eighty-one".