51323113 has 4 divisors (see below), whose sum is σ = 51727360. Its totient is φ = 50918868.

The previous prime is 51323101. The next prime is 51323117. The reversal of 51323113 is 31132315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51323113 - 2²¹ = 49225961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51323117) 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, 201933 + ... + 202186.

It is an arithmetic number, because the mean of its divisors is an integer number (12931840).

Almost surely, 2^51323113 is an apocalyptic number.

It is an amenable number.

51323113 is a deficient number, since it is larger than the sum of its proper divisors (404247).

51323113 is a wasteful number, since it uses less digits than its factorization.

51323113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404246.

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

The square root of 51323113 is about 7164.0151451543. The cubic root of 51323113 is about 371.6244934172.

Adding to 51323113 its reverse (31132315), we get a palindrome (82455428).

The spelling of 51323113 in words is "fifty-one million, three hundred twenty-three thousand, one hundred thirteen".