51322345 has 4 divisors (see below), whose sum is σ = 61586820. Its totient is φ = 41057872.

The previous prime is 51322339. The next prime is 51322357. The reversal of 51322345 is 54322315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54322315 = 5 ⋅10864463.

It can be written as a sum of positive squares in 2 ways, for example, as 10413529 + 40908816 = 3227^2 + 6396^2 .

It is a cyclic number.

It is not a de Polignac number, because 51322345 - 2⁷ = 51322217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5132230 + ... + 5132239.

It is an arithmetic number, because the mean of its divisors is an integer number (15396705).

Almost surely, 2^51322345 is an apocalyptic number.

It is an amenable number.

51322345 is a deficient number, since it is larger than the sum of its proper divisors (10264475).

51322345 is a wasteful number, since it uses less digits than its factorization.

51322345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264474.

The product of its digits is 3600, while the sum is 25.

The square root of 51322345 is about 7163.9615437270. The cubic root of 51322345 is about 371.6226397428.

The spelling of 51322345 in words is "fifty-one million, three hundred twenty-two thousand, three hundred forty-five".