51234213 has 16 divisors (see below), whose sum is σ = 71239680. Its totient is φ = 32711616.

The previous prime is 51234193. The next prime is 51234217. The reversal of 51234213 is 31243215.

51234213 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 51234213 - 2⁵ = 51234181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51234213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51234217) 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 15 ways as a sum of consecutive naturals, for example, 8731 + ... + 13367.

It is an arithmetic number, because the mean of its divisors is an integer number (4452480).

Almost surely, 2^51234213 is an apocalyptic number.

It is an amenable number.

51234213 is a deficient number, since it is larger than the sum of its proper divisors (20005467).

51234213 is a wasteful number, since it uses less digits than its factorization.

51234213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4796.

The product of its digits is 720, while the sum is 21.

The square root of 51234213 is about 7157.8078348053. The cubic root of 51234213 is about 371.4097980015.

Adding to 51234213 its reverse (31243215), we get a palindrome (82477428).

The spelling of 51234213 in words is "fifty-one million, two hundred thirty-four thousand, two hundred thirteen".