50821249 has 4 divisors (see below), whose sum is σ = 51062320. Its totient is φ = 50580180.

The previous prime is 50821229. The next prime is 50821259. The reversal of 50821249 is 94212805.

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 a de Polignac number, because none of the positive numbers 2^k-50821249 is a prime.

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 50821249.

It is not an unprimeable number, because it can be changed into a prime (50821229) 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, 120219 + ... + 120640.

It is an arithmetic number, because the mean of its divisors is an integer number (12765580).

Almost surely, 2^50821249 is an apocalyptic number.

It is an amenable number.

50821249 is a deficient number, since it is larger than the sum of its proper divisors (241071).

50821249 is a wasteful number, since it uses less digits than its factorization.

50821249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241070.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 50821249 is about 7128.9023699305. The cubic root of 50821249 is about 370.4092112435.

The spelling of 50821249 in words is "fifty million, eight hundred twenty-one thousand, two hundred forty-nine".