50489281 has 4 divisors (see below), whose sum is σ = 50518192. Its totient is φ = 50460372.

The previous prime is 50489279. The next prime is 50489293. The reversal of 50489281 is 18298405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50489281 - 2¹ = 50489279 is a prime.

It is a super-2 number, since 2×50489281² = 5098334991793922, 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 50489281.

It is not an unprimeable number, because it can be changed into a prime (50489381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11655 + ... + 15388.

It is an arithmetic number, because the mean of its divisors is an integer number (12629548).

Almost surely, 2^50489281 is an apocalyptic number.

It is an amenable number.

50489281 is a deficient number, since it is larger than the sum of its proper divisors (28911).

50489281 is a wasteful number, since it uses less digits than its factorization.

50489281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28910.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 50489281 is about 7105.5809755431. The cubic root of 50489281 is about 369.6009357036.

The spelling of 50489281 in words is "fifty million, four hundred eighty-nine thousand, two hundred eighty-one".