855393153 has 4 divisors (see below), whose sum is σ = 1140524208. Its totient is φ = 570262100.

The previous prime is 855393113. The next prime is 855393157. The reversal of 855393153 is 351393558.

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 855393153 - 2²¹ = 853296001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (855393157) 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, 142565523 + ... + 142565528.

It is an arithmetic number, because the mean of its divisors is an integer number (285131052).

Almost surely, 2^855393153 is an apocalyptic number.

It is an amenable number.

855393153 is a deficient number, since it is larger than the sum of its proper divisors (285131055).

855393153 is a wasteful number, since it uses less digits than its factorization.

855393153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285131054.

The product of its digits is 243000, while the sum is 42.

The square root of 855393153 is about 29247.1050362254. The cubic root of 855393153 is about 949.2674511556.

The spelling of 855393153 in words is "eight hundred fifty-five million, three hundred ninety-three thousand, one hundred fifty-three".