51565363 has 4 divisors (see below), whose sum is σ = 51741648. Its totient is φ = 51389080.

The previous prime is 51565361. The next prime is 51565387. The reversal of 51565363 is 36356515.

51565363 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 is a cyclic number.

It is not a de Polignac number, because 51565363 - 2¹ = 51565361 is a prime.

It is a super-2 number, since 2×51565363² = 5317973322643538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51565361) 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, 87703 + ... + 88288.

It is an arithmetic number, because the mean of its divisors is an integer number (12935412).

Almost surely, 2^51565363 is an apocalyptic number.

51565363 is a deficient number, since it is larger than the sum of its proper divisors (176285).

51565363 is a wasteful number, since it uses less digits than its factorization.

51565363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176284.

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

The square root of 51565363 is about 7180.9026591369. The cubic root of 51565363 is about 372.2082769195.

The spelling of 51565363 in words is "fifty-one million, five hundred sixty-five thousand, three hundred sixty-three".