858555253 has 4 divisors (see below), whose sum is σ = 860410048. Its totient is φ = 856700460.

The previous prime is 858555239. The next prime is 858555277. The reversal of 858555253 is 352555858.

858555253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 858555253 - 2⁵ = 858555221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858555653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926703 + ... + 927628.

It is an arithmetic number, because the mean of its divisors is an integer number (215102512).

Almost surely, 2^858555253 is an apocalyptic number.

It is an amenable number.

858555253 is a deficient number, since it is larger than the sum of its proper divisors (1854795).

858555253 is a wasteful number, since it uses less digits than its factorization.

858555253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854794.

The product of its digits is 1200000, while the sum is 46.

The square root of 858555253 is about 29301.1135112644. The cubic root of 858555253 is about 950.4357199776.

The spelling of 858555253 in words is "eight hundred fifty-eight million, five hundred fifty-five thousand, two hundred fifty-three".