51572323 has 4 divisors (see below), whose sum is σ = 56260728. Its totient is φ = 46883920.

The previous prime is 51572309. The next prime is 51572329. The reversal of 51572323 is 32327515.

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 51572323 - 2⁵ = 51572291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51572291 and 51572300.

It is not an unprimeable number, because it can be changed into a prime (51572329) 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, 2344186 + ... + 2344207.

It is an arithmetic number, because the mean of its divisors is an integer number (14065182).

Almost surely, 2^51572323 is an apocalyptic number.

51572323 is a deficient number, since it is larger than the sum of its proper divisors (4688405).

51572323 is a wasteful number, since it uses less digits than its factorization.

51572323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688404.

The product of its digits is 6300, while the sum is 28.

The square root of 51572323 is about 7181.3872615254. The cubic root of 51572323 is about 372.2250223530.

Adding to 51572323 its reverse (32327515), we get a palindrome (83899838).

The spelling of 51572323 in words is "fifty-one million, five hundred seventy-two thousand, three hundred twenty-three".