51363563 has 4 divisors (see below), whose sum is σ = 51483168. Its totient is φ = 51243960.

The previous prime is 51363551. The next prime is 51363569. The reversal of 51363563 is 36536315.

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 51363563 - 2¹⁸ = 51101419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51363569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59156 + ... + 60017.

It is an arithmetic number, because the mean of its divisors is an integer number (12870792).

Almost surely, 2^51363563 is an apocalyptic number.

51363563 is a deficient number, since it is larger than the sum of its proper divisors (119605).

51363563 is a wasteful number, since it uses less digits than its factorization.

51363563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119604.

The product of its digits is 24300, while the sum is 32.

The square root of 51363563 is about 7166.8377266407. The cubic root of 51363563 is about 371.7220989756.

Adding to 51363563 its reverse (36536315), we get a palindrome (87899878).

The spelling of 51363563 in words is "fifty-one million, three hundred sixty-three thousand, five hundred sixty-three".