512891 has 2 divisors, whose sum is σ = 512892. Its totient is φ = 512890.

The previous prime is 512849. The next prime is 512899. The reversal of 512891 is 198215.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 512891 - 2¹⁰ = 511867 is a prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 512891.

It is not a weakly prime, because it can be changed into another prime (512899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256445 + 256446.

It is an arithmetic number, because the mean of its divisors is an integer number (256446).

2⁵¹²⁸⁹¹ is an apocalyptic number.

512891 is a deficient number, since it is larger than the sum of its proper divisors (1).

512891 is an equidigital number, since it uses as much as digits as its factorization.

512891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 26.

The square root of 512891 is about 716.1640873431. The cubic root of 512891 is about 80.0463793567.

The spelling of 512891 in words is "five hundred twelve thousand, eight hundred ninety-one".