50436521 has 4 divisors (see below), whose sum is σ = 50521044. Its totient is φ = 50352000.

The previous prime is 50436517. The next prime is 50436553. The reversal of 50436521 is 12563405.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46730896 + 3705625 = 6836^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 50436521 - 2² = 50436517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50436511) 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 in 3 ways as a sum of consecutive naturals, for example, 41360 + ... + 42561.

It is an arithmetic number, because the mean of its divisors is an integer number (12630261).

Almost surely, 2^50436521 is an apocalyptic number.

It is an amenable number.

50436521 is a deficient number, since it is larger than the sum of its proper divisors (84523).

50436521 is an equidigital number, since it uses as much as digits as its factorization.

50436521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84522.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 50436521 is about 7101.8674304721. The cubic root of 50436521 is about 369.4721496768.

Adding to 50436521 its reverse (12563405), we get a palindrome (62999926).

The spelling of 50436521 in words is "fifty million, four hundred thirty-six thousand, five hundred twenty-one".