50738639 has 4 divisors (see below), whose sum is σ = 57987024. Its totient is φ = 43490256.

The previous prime is 50738629. The next prime is 50738657. The reversal of 50738639 is 93683705.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50738639 is a prime.

It is a super-3 number, since 3×50738639³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50738596 and 50738605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50738609) 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, 3624182 + ... + 3624195.

It is an arithmetic number, because the mean of its divisors is an integer number (14496756).

Almost surely, 2^50738639 is an apocalyptic number.

50738639 is a deficient number, since it is larger than the sum of its proper divisors (7248385).

50738639 is an equidigital number, since it uses as much as digits as its factorization.

50738639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248384.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 50738639 is about 7123.1059938765. The cubic root of 50738639 is about 370.2084021963.

The spelling of 50738639 in words is "fifty million, seven hundred thirty-eight thousand, six hundred thirty-nine".