50312521 has 4 divisors (see below), whose sum is σ = 57500032. Its totient is φ = 43125012.

The previous prime is 50312467. The next prime is 50312527. The reversal of 50312521 is 12521305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12521305 = 5 ⋅2504261.

It is not a de Polignac number, because 50312521 - 2⁷ = 50312393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50312527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3593745 + ... + 3593758.

It is an arithmetic number, because the mean of its divisors is an integer number (14375008).

Almost surely, 2^50312521 is an apocalyptic number.

It is an amenable number.

50312521 is a deficient number, since it is larger than the sum of its proper divisors (7187511).

50312521 is an equidigital number, since it uses as much as digits as its factorization.

50312521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7187510.

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

The square root of 50312521 is about 7093.1319598609. The cubic root of 50312521 is about 369.1691143459.

Adding to 50312521 its reverse (12521305), we get a palindrome (62833826).

The spelling of 50312521 in words is "fifty million, three hundred twelve thousand, five hundred twenty-one".