50984865 has 12 divisors (see below), whose sum is σ = 88373844. Its totient is φ = 27191904.

The previous prime is 50984861. The next prime is 50984867. The reversal of 50984865 is 56848905.

50984865 is a `hidden beast` number, since 509 + 84 + 8 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22212369 + 28772496 = 4713^2 + 5364^2 .

It is not a de Polignac number, because 50984865 - 2² = 50984861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1132997 = 50984865 / (5 + 0 + 9 + 8 + 4 + 8 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 50984865.

It is not an unprimeable number, because it can be changed into a prime (50984861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566454 + ... + 566543.

It is an arithmetic number, because the mean of its divisors is an integer number (7364487).

Almost surely, 2^50984865 is an apocalyptic number.

It is an amenable number.

50984865 is a deficient number, since it is larger than the sum of its proper divisors (37388979).

50984865 is a wasteful number, since it uses less digits than its factorization.

50984865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133008 (or 1133005 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 50984865 is about 7140.3686879600. The cubic root of 50984865 is about 370.8062889282.

The spelling of 50984865 in words is "fifty million, nine hundred eighty-four thousand, eight hundred sixty-five".