50013021 has 8 divisors (see below), whose sum is σ = 67679584. Its totient is φ = 32844240.

The previous prime is 50013001. The next prime is 50013037. The reversal of 50013021 is 12031005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-50013021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50012988 and 50013006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50013001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124210 + ... + 124611.

It is an arithmetic number, because the mean of its divisors is an integer number (8459948).

Almost surely, 2^50013021 is an apocalyptic number.

It is an amenable number.

50013021 is a deficient number, since it is larger than the sum of its proper divisors (17666563).

50013021 is a wasteful number, since it uses less digits than its factorization.

50013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248891.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 50013021 is about 7071.9884756693. The cubic root of 50013021 is about 368.4351269378.

Adding to 50013021 its reverse (12031005), we get a palindrome (62044026).

The spelling of 50013021 in words is "fifty million, thirteen thousand, twenty-one".