51336469 has 4 divisors (see below), whose sum is σ = 52588620. Its totient is φ = 50084320.

The previous prime is 51336457. The next prime is 51336473. The reversal of 51336469 is 96463315.

51336469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19695844 + 31640625 = 4438^2 + 5625^2 .

It is a cyclic number.

It is not a de Polignac number, because 51336469 - 2⁹ = 51335957 is a prime.

It is a super-2 number, since 2×51336469² = 5270866098775922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51336419) 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 3 ways as a sum of consecutive naturals, for example, 626014 + ... + 626095.

It is an arithmetic number, because the mean of its divisors is an integer number (13147155).

Almost surely, 2^51336469 is an apocalyptic number.

It is an amenable number.

51336469 is a deficient number, since it is larger than the sum of its proper divisors (1252151).

51336469 is a wasteful number, since it uses less digits than its factorization.

51336469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252150.

The product of its digits is 58320, while the sum is 37.

The square root of 51336469 is about 7164.9472433508. The cubic root of 51336469 is about 371.6567270183.

The spelling of 51336469 in words is "fifty-one million, three hundred thirty-six thousand, four hundred sixty-nine".