50668381 has 4 divisors (see below), whose sum is σ = 53648892. Its totient is φ = 47687872.

The previous prime is 50668357. The next prime is 50668393. The reversal of 50668381 is 18386605.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41396356 + 9272025 = 6434^2 + 3045^2 .

It is a cyclic number.

It is not a de Polignac number, because 50668381 - 2⁵ = 50668349 is a prime.

It is a super-2 number, since 2×50668381² = 5134569666322322, 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 50668381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50668181) 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, 1490230 + ... + 1490263.

It is an arithmetic number, because the mean of its divisors is an integer number (13412223).

Almost surely, 2^50668381 is an apocalyptic number.

It is an amenable number.

50668381 is a deficient number, since it is larger than the sum of its proper divisors (2980511).

50668381 is a wasteful number, since it uses less digits than its factorization.

50668381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980510.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 50668381 is about 7118.1725885230. The cubic root of 50668381 is about 370.0374469039.

The spelling of 50668381 in words is "fifty million, six hundred sixty-eight thousand, three hundred eighty-one".