51333169 has 4 divisors (see below), whose sum is σ = 51347520. Its totient is φ = 51318820.

The previous prime is 51333167. The next prime is 51333197. The reversal of 51333169 is 96133315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51333169 - 2¹ = 51333167 is a prime.

It is a super-2 number, since 2×51333169² = 5270188479165122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51333169.

It is not an unprimeable number, because it can be changed into a prime (51333167) 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 in 3 ways as a sum of consecutive naturals, for example, 3012 + ... + 10570.

It is an arithmetic number, because the mean of its divisors is an integer number (12836880).

Almost surely, 2^51333169 is an apocalyptic number.

It is an amenable number.

51333169 is a deficient number, since it is larger than the sum of its proper divisors (14351).

51333169 is an equidigital number, since it uses as much as digits as its factorization.

51333169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14350.

The product of its digits is 7290, while the sum is 31.

The square root of 51333169 is about 7164.7169518412. The cubic root of 51333169 is about 371.6487632614.

The spelling of 51333169 in words is "fifty-one million, three hundred thirty-three thousand, one hundred sixty-nine".