51492223 has 4 divisors (see below), whose sum is σ = 54202360. Its totient is φ = 48782088.

The previous prime is 51492173. The next prime is 51492257. The reversal of 51492223 is 32229415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51492223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51492191 and 51492200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51492293) 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, 1355040 + ... + 1355077.

It is an arithmetic number, because the mean of its divisors is an integer number (13550590).

Almost surely, 2^51492223 is an apocalyptic number.

51492223 is a deficient number, since it is larger than the sum of its proper divisors (2710137).

51492223 is a wasteful number, since it uses less digits than its factorization.

51492223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710136.

The product of its digits is 4320, while the sum is 28.

The square root of 51492223 is about 7175.8081774808. The cubic root of 51492223 is about 372.0322143259.

It can be divided in two parts, 51492 and 223, that added together give a palindrome (51715).

The spelling of 51492223 in words is "fifty-one million, four hundred ninety-two thousand, two hundred twenty-three".