51433563 has 4 divisors (see below), whose sum is σ = 68578088. Its totient is φ = 34289040.

The previous prime is 51433549. The next prime is 51433601. The reversal of 51433563 is 36533415.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51433563 - 2⁸ = 51433307 is a prime.

It is a super-2 number, since 2×51433563² = 5290822805749938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51433563.

It is not an unprimeable number, because it can be changed into a prime (51433363) 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 3 ways as a sum of consecutive naturals, for example, 8572258 + ... + 8572263.

It is an arithmetic number, because the mean of its divisors is an integer number (17144522).

Almost surely, 2^51433563 is an apocalyptic number.

51433563 is a deficient number, since it is larger than the sum of its proper divisors (17144525).

51433563 is a wasteful number, since it uses less digits than its factorization.

51433563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17144524.

The product of its digits is 16200, while the sum is 30.

The square root of 51433563 is about 7171.7196682525. The cubic root of 51433563 is about 371.8908874694.

Adding to 51433563 its reverse (36533415), we get a palindrome (87966978).

The spelling of 51433563 in words is "fifty-one million, four hundred thirty-three thousand, five hundred sixty-three".