51812723 has 2 divisors, whose sum is σ = 51812724. Its totient is φ = 51812722.

The previous prime is 51812713. The next prime is 51812731. The reversal of 51812723 is 32721815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51812723 - 2¹⁶ = 51747187 is a prime.

It is not a weakly prime, because it can be changed into another prime (51812713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25906361 + 25906362.

It is an arithmetic number, because the mean of its divisors is an integer number (25906362).

Almost surely, 2^51812723 is an apocalyptic number.

51812723 is a deficient number, since it is larger than the sum of its proper divisors (1).

51812723 is an equidigital number, since it uses as much as digits as its factorization.

51812723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 51812723 is about 7198.1055146476. The cubic root of 51812723 is about 372.8024911072.

The spelling of 51812723 in words is "fifty-one million, eight hundred twelve thousand, seven hundred twenty-three".