50955138 has 48 divisors (see below), whose sum is σ = 120609216. Its totient is φ = 15452640.

The previous prime is 50955127. The next prime is 50955139. The reversal of 50955138 is 83155905.

It is a happy number.

50955138 is a `hidden beast` number, since 50 + 95 + 513 + 8 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (50955139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15081 + ... + 18147.

It is an arithmetic number, because the mean of its divisors is an integer number (2512692).

Almost surely, 2^50955138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50955138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60304608).

50955138 is an abundant number, since it is smaller than the sum of its proper divisors (69654078).

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

50955138 is a wasteful number, since it uses less digits than its factorization.

50955138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 50955138 is about 7138.2867692465. The cubic root of 50955138 is about 370.7342080497.

The spelling of 50955138 in words is "fifty million, nine hundred fifty-five thousand, one hundred thirty-eight".