51563365 has 8 divisors (see below), whose sum is σ = 70715520. Its totient is φ = 35357712.

The previous prime is 51563339. The next prime is 51563377. The reversal of 51563365 is 56336515.

51563365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51563365 - 2¹¹ = 51561317 is a prime.

It is a super-2 number, since 2×51563365² = 5317561220246450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51563365.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 736585 + ... + 736654.

It is an arithmetic number, because the mean of its divisors is an integer number (8839440).

Almost surely, 2^51563365 is an apocalyptic number.

It is an amenable number.

51563365 is a deficient number, since it is larger than the sum of its proper divisors (19152155).

51563365 is a wasteful number, since it uses less digits than its factorization.

51563365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473251.

The product of its digits is 40500, while the sum is 34.

The square root of 51563365 is about 7180.7635387889. The cubic root of 51563365 is about 372.2034695469.

The spelling of 51563365 in words is "fifty-one million, five hundred sixty-three thousand, three hundred sixty-five".