50139533 has 4 divisors (see below), whose sum is σ = 50360640. Its totient is φ = 49918428.

The previous prime is 50139497. The next prime is 50139541. The reversal of 50139533 is 33593105.

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 50139533 - 2¹⁰ = 50138509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50139496 and 50139505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50139833) 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, 110213 + ... + 110666.

It is an arithmetic number, because the mean of its divisors is an integer number (12590160).

Almost surely, 2^50139533 is an apocalyptic number.

It is an amenable number.

50139533 is a deficient number, since it is larger than the sum of its proper divisors (221107).

50139533 is a wasteful number, since it uses less digits than its factorization.

50139533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221106.

The product of its (nonzero) digits is 6075, while the sum is 29.

The square root of 50139533 is about 7080.9274110105. The cubic root of 50139533 is about 368.7455275528.

The spelling of 50139533 in words is "fifty million, one hundred thirty-nine thousand, five hundred thirty-three".