50361521 has 4 divisors (see below), whose sum is σ = 57556032. Its totient is φ = 43167012.

The previous prime is 50361517. The next prime is 50361523. The reversal of 50361521 is 12516305.

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: 12516305 = 5 ⋅2503261.

It is not a de Polignac number, because 50361521 - 2² = 50361517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50361523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3597245 + ... + 3597258.

It is an arithmetic number, because the mean of its divisors is an integer number (14389008).

Almost surely, 2^50361521 is an apocalyptic number.

It is an amenable number.

50361521 is a deficient number, since it is larger than the sum of its proper divisors (7194511).

50361521 is an equidigital number, since it uses as much as digits as its factorization.

50361521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194510.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 50361521 is about 7096.5851647113. The cubic root of 50361521 is about 369.2889216155.

Adding to 50361521 its reverse (12516305), we get a palindrome (62877826).

The spelling of 50361521 in words is "fifty million, three hundred sixty-one thousand, five hundred twenty-one".