51533323 has 2 divisors, whose sum is σ = 51533324. Its totient is φ = 51533322.

The previous prime is 51533303. The next prime is 51533329. The reversal of 51533323 is 32333515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51533323 - 2¹⁷ = 51402251 is a prime.

It is not a weakly prime, because it can be changed into another prime (51533329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25766661 + 25766662.

It is an arithmetic number, because the mean of its divisors is an integer number (25766662).

Almost surely, 2^51533323 is an apocalyptic number.

51533323 is a deficient number, since it is larger than the sum of its proper divisors (1).

51533323 is an equidigital number, since it uses as much as digits as its factorization.

51533323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 25.

The square root of 51533323 is about 7178.6713951817. The cubic root of 51533323 is about 372.1311707425.

Adding to 51533323 its reverse (32333515), we get a palindrome (83866838).

The spelling of 51533323 in words is "fifty-one million, five hundred thirty-three thousand, three hundred twenty-three".