51113323 has 4 divisors (see below), whose sum is σ = 51687720. Its totient is φ = 50538928.

The previous prime is 51113311. The next prime is 51113333. The reversal of 51113323 is 32331115.

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 51113323 - 2²¹ = 49016171 is a prime.

It is a super-2 number, since 2×51113323² = 5225143576204658, 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 51113323.

It is not an unprimeable number, because it can be changed into a prime (51113333) 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, 287065 + ... + 287242.

It is an arithmetic number, because the mean of its divisors is an integer number (12921930).

Almost surely, 2^51113323 is an apocalyptic number.

51113323 is a deficient number, since it is larger than the sum of its proper divisors (574397).

51113323 is an equidigital number, since it uses as much as digits as its factorization.

51113323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574396.

The product of its digits is 270, while the sum is 19.

The square root of 51113323 is about 7149.3582229456. The cubic root of 51113323 is about 371.1174471895.

Adding to 51113323 its reverse (32331115), we get a palindrome (83444438).

The spelling of 51113323 in words is "fifty-one million, one hundred thirteen thousand, three hundred twenty-three".