859553 has 2 divisors, whose sum is σ = 859554. Its totient is φ = 859552.

The previous prime is 859513. The next prime is 859559. The reversal of 859553 is 355958.

859553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 380689 = 692^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 859553 - 2⁸ = 859297 is a prime.

It is not a weakly prime, because it can be changed into another prime (859559) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429776 + 429777.

It is an arithmetic number, because the mean of its divisors is an integer number (429777).

2⁸⁵⁹⁵⁵³ is an apocalyptic number.

It is an amenable number.

859553 is a deficient number, since it is larger than the sum of its proper divisors (1).

859553 is an equidigital number, since it uses as much as digits as its factorization.

859553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 35.

The square root of 859553 is about 927.1208119765. The cubic root of 859553 is about 95.0803751923.

It can be divided in two parts, 85955 and 3, that added together give a palindrome (85958).

The spelling of 859553 in words is "eight hundred fifty-nine thousand, five hundred fifty-three".