50781213 has 12 divisors (see below), whose sum is σ = 83829408. Its totient is φ = 29017800.

The previous prime is 50781191. The next prime is 50781223. The reversal of 50781213 is 31218705.

50781213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50781213 - 2⁹ = 50780701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50781223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402963 + ... + 403088.

It is an arithmetic number, because the mean of its divisors is an integer number (6985784).

Almost surely, 2^50781213 is an apocalyptic number.

It is an amenable number.

50781213 is a deficient number, since it is larger than the sum of its proper divisors (33048195).

50781213 is a wasteful number, since it uses less digits than its factorization.

50781213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806064 (or 806061 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 50781213 is about 7126.0938107774. The cubic root of 50781213 is about 370.3119186126.

Adding to 50781213 its reverse (31218705), we get a palindrome (81999918).

The spelling of 50781213 in words is "fifty million, seven hundred eighty-one thousand, two hundred thirteen".