51322895 has 32 divisors (see below), whose sum is σ = 72273600. Its totient is φ = 34642944.

The previous prime is 51322889. The next prime is 51322897. The reversal of 51322895 is 59822315.

It is a Cunningham number, because it is equal to 7164²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51322895 is a prime.

It is a super-3 number, since 3×51322895³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51322897) 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 31 ways as a sum of consecutive naturals, for example, 35099 + ... + 36531.

It is an arithmetic number, because the mean of its divisors is an integer number (2258550).

Almost surely, 2^51322895 is an apocalyptic number.

51322895 is a deficient number, since it is larger than the sum of its proper divisors (20950705).

51322895 is a wasteful number, since it uses less digits than its factorization.

51322895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499.

The product of its digits is 21600, while the sum is 35.

The square root of 51322895 is about 7163.9999302066. Note that the first 4 decimals coincide. The cubic root of 51322895 is about 371.6239672459.

The spelling of 51322895 in words is "fifty-one million, three hundred twenty-two thousand, eight hundred ninety-five".