51324263 has 4 divisors (see below), whose sum is σ = 54025560. Its totient is φ = 48622968.

The previous prime is 51324257. The next prime is 51324281. The reversal of 51324263 is 36242315.

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 51324263 - 2⁶ = 51324199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51324223) 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, 1350620 + ... + 1350657.

It is an arithmetic number, because the mean of its divisors is an integer number (13506390).

Almost surely, 2^51324263 is an apocalyptic number.

51324263 is a deficient number, since it is larger than the sum of its proper divisors (2701297).

51324263 is a wasteful number, since it uses less digits than its factorization.

51324263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701296.

The product of its digits is 4320, while the sum is 26.

The square root of 51324263 is about 7164.0954069582. The cubic root of 51324263 is about 371.6272690671.

Adding to 51324263 its reverse (36242315), we get a palindrome (87566578).

The spelling of 51324263 in words is "fifty-one million, three hundred twenty-four thousand, two hundred sixty-three".