50289381 has 6 divisors (see below), whose sum is σ = 72640230. Its totient is φ = 33526248.

The previous prime is 50289377. The next prime is 50289391. The reversal of 50289381 is 18398205.

It can be written as a sum of positive squares in only one way, i.e., 48233025 + 2056356 = 6945^2 + 1434^2 .

It is not a de Polignac number, because 50289381 - 2² = 50289377 is a prime.

It is a super-2 number, since 2×50289381² = 5058043682726322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50289301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2793846 + ... + 2793863.

It is an arithmetic number, because the mean of its divisors is an integer number (12106705).

Almost surely, 2^50289381 is an apocalyptic number.

It is an amenable number.

50289381 is a deficient number, since it is larger than the sum of its proper divisors (22350849).

50289381 is a wasteful number, since it uses less digits than its factorization.

50289381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587715 (or 5587712 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 50289381 is about 7091.5006169357. The cubic root of 50289381 is about 369.1125089315.

The spelling of 50289381 in words is "fifty million, two hundred eighty-nine thousand, three hundred eighty-one".