50051213 has 4 divisors (see below), whose sum is σ = 52995420. Its totient is φ = 47107008.

The previous prime is 50051207. The next prime is 50051219. The reversal of 50051213 is 31215005.

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

It is an interprime number because it is at equal distance from previous prime (50051207) and next prime (50051219).

It can be written as a sum of positive squares in 2 ways, for example, as 24780484 + 25270729 = 4978^2 + 5027^2 .

It is a cyclic number.

It is not a de Polignac number, because 50051213 - 2¹² = 50047117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2944189 = 50051213 / (5 + 0 + 0 + 5 + 1 + 2 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50051191 and 50051200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50051219) 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, 1472078 + ... + 1472111.

It is an arithmetic number, because the mean of its divisors is an integer number (13248855).

Almost surely, 2^50051213 is an apocalyptic number.

It is an amenable number.

50051213 is a deficient number, since it is larger than the sum of its proper divisors (2944207).

50051213 is a wasteful number, since it uses less digits than its factorization.

50051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944206.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 50051213 is about 7074.6881910088. The cubic root of 50051213 is about 368.5288871480.

Adding to 50051213 its reverse (31215005), we get a palindrome (81266218).

The spelling of 50051213 in words is "fifty million, fifty-one thousand, two hundred thirteen".