51999593 has 2 divisors, whose sum is σ = 51999594. Its totient is φ = 51999592.

The previous prime is 51999587. The next prime is 51999601. The reversal of 51999593 is 39599915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51380224 + 619369 = 7168^2 + 787^2 .

It is a cyclic number.

It is not a de Polignac number, because 51999593 - 2¹² = 51995497 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51999503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25999796 + 25999797.

It is an arithmetic number, because the mean of its divisors is an integer number (25999797).

Almost surely, 2^51999593 is an apocalyptic number.

It is an amenable number.

51999593 is a deficient number, since it is larger than the sum of its proper divisors (1).

51999593 is an equidigital number, since it uses as much as digits as its factorization.

51999593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 492075, while the sum is 50.

The square root of 51999593 is about 7211.0743305003. The cubic root of 51999593 is about 373.2501418766.

The spelling of 51999593 in words is "fifty-one million, nine hundred ninety-nine thousand, five hundred ninety-three".