50521533 has 4 divisors (see below), whose sum is σ = 67362048. Its totient is φ = 33681020.

The previous prime is 50521529. The next prime is 50521573. The reversal of 50521533 is 33512505.

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.

It is a cyclic number.

It is not a de Polignac number, because 50521533 - 2² = 50521529 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50521573) 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, 8420253 + ... + 8420258.

It is an arithmetic number, because the mean of its divisors is an integer number (16840512).

Almost surely, 2^50521533 is an apocalyptic number.

It is an amenable number.

50521533 is a deficient number, since it is larger than the sum of its proper divisors (16840515).

50521533 is a wasteful number, since it uses less digits than its factorization.

50521533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16840514.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 50521533 is about 7107.8500968999. The cubic root of 50521533 is about 369.6796179628.

Subtracting from 50521533 its reverse (33512505), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 50521533 in words is "fifty million, five hundred twenty-one thousand, five hundred thirty-three".