50813239 has 4 divisors (see below), whose sum is σ = 53487640. Its totient is φ = 48138840.

The previous prime is 50813237. The next prime is 50813261. The reversal of 50813239 is 93231805.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93231805 = 5 ⋅18646361.

It is a cyclic number.

It is not a de Polignac number, because 50813239 - 2¹ = 50813237 is a prime.

It is a super-2 number, since 2×50813239² = 5163970515342242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50813239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50813237) 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, 1337172 + ... + 1337209.

It is an arithmetic number, because the mean of its divisors is an integer number (13371910).

Almost surely, 2^50813239 is an apocalyptic number.

50813239 is a deficient number, since it is larger than the sum of its proper divisors (2674401).

50813239 is a wasteful number, since it uses less digits than its factorization.

50813239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674400.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 50813239 is about 7128.3405502263. The cubic root of 50813239 is about 370.3897500029.

The spelling of 50813239 in words is "fifty million, eight hundred thirteen thousand, two hundred thirty-nine".