51213363 has 16 divisors (see below), whose sum is σ = 69430176. Its totient is φ = 33574400.

The previous prime is 51213361. The next prime is 51213413. The reversal of 51213363 is 36331215.

It is a happy number.

51213363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51213363 - 2¹ = 51213361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51213361) 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, 51931 + ... + 52907.

It is an arithmetic number, because the mean of its divisors is an integer number (4339386).

Almost surely, 2^51213363 is an apocalyptic number.

51213363 is a deficient number, since it is larger than the sum of its proper divisors (18216813).

51213363 is a wasteful number, since it uses less digits than its factorization.

51213363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its digits is 1620, while the sum is 24.

The square root of 51213363 is about 7156.3512350918. The cubic root of 51213363 is about 371.3594088537.

Adding to 51213363 its reverse (36331215), we get a palindrome (87544578).

The spelling of 51213363 in words is "fifty-one million, two hundred thirteen thousand, three hundred sixty-three".