50887138 has 4 divisors (see below), whose sum is σ = 76330710. Its totient is φ = 25443568.

The previous prime is 50887129. The next prime is 50887147. The reversal of 50887138 is 83178805.

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

It is an interprime number because it is at equal distance from previous prime (50887129) and next prime (50887147).

It can be written as a sum of positive squares in only one way, i.e., 39778249 + 11108889 = 6307^2 + 3333^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 50887138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12721783 + ... + 12721786.

Almost surely, 2^50887138 is an apocalyptic number.

50887138 is a deficient number, since it is larger than the sum of its proper divisors (25443572).

50887138 is a wasteful number, since it uses less digits than its factorization.

50887138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25443571.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 50887138 is about 7133.5221314579. The cubic root of 50887138 is about 370.5692188079.

The spelling of 50887138 in words is "fifty million, eight hundred eighty-seven thousand, one hundred thirty-eight".