50021331 has 4 divisors (see below), whose sum is σ = 66695112. Its totient is φ = 33347552.

The previous prime is 50021287. The next prime is 50021339. The reversal of 50021331 is 13312005.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 50021331 - 2⁶ = 50021267 is a prime.

It is a super-2 number, since 2×50021331² = 5004267110023122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50021331.

It is not an unprimeable number, because it can be changed into a prime (50021339) 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, 8336886 + ... + 8336891.

It is an arithmetic number, because the mean of its divisors is an integer number (16673778).

Almost surely, 2^50021331 is an apocalyptic number.

50021331 is a deficient number, since it is larger than the sum of its proper divisors (16673781).

50021331 is a wasteful number, since it uses less digits than its factorization.

50021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16673780.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 50021331 is about 7072.5759805039. The cubic root of 50021331 is about 368.4555317996.

Adding to 50021331 its reverse (13312005), we get a palindrome (63333336).

The spelling of 50021331 in words is "fifty million, twenty-one thousand, three hundred thirty-one".