50643138 has 32 divisors (see below), whose sum is σ = 124661376. Its totient is φ = 13356288.

The previous prime is 50643137. The next prime is 50643139. The reversal of 50643138 is 83134605.

It is an interprime number because it is at equal distance from previous prime (50643137) and next prime (50643139).

It is not an unprimeable number, because it can be changed into a prime (50643137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45831 + ... + 46922.

It is an arithmetic number, because the mean of its divisors is an integer number (3895668).

Almost surely, 2^50643138 is an apocalyptic number.

50643138 is an abundant number, since it is smaller than the sum of its proper divisors (74018238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50643138 is a wasteful number, since it uses less digits than its factorization.

50643138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92778.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 50643138 is about 7116.3992299477. The cubic root of 50643138 is about 369.9759857801.

The spelling of 50643138 in words is "fifty million, six hundred forty-three thousand, one hundred thirty-eight".