51723599 has 2 divisors, whose sum is σ = 51723600. Its totient is φ = 51723598.

The previous prime is 51723587. The next prime is 51723611. The reversal of 51723599 is 99532715.

It is a balanced prime because it is at equal distance from previous prime (51723587) and next prime (51723611).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51723599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51723569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25861799 + 25861800.

It is an arithmetic number, because the mean of its divisors is an integer number (25861800).

Almost surely, 2^51723599 is an apocalyptic number.

51723599 is a deficient number, since it is larger than the sum of its proper divisors (1).

51723599 is an equidigital number, since it uses as much as digits as its factorization.

51723599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 85050, while the sum is 41.

The square root of 51723599 is about 7191.9120545235. The cubic root of 51723599 is about 372.5886136643.

The spelling of 51723599 in words is "fifty-one million, seven hundred twenty-three thousand, five hundred ninety-nine".