854288561 has 4 divisors (see below), whose sum is σ = 976329792. Its totient is φ = 732247332.

The previous prime is 854288557. The next prime is 854288599. The reversal of 854288561 is 165882458.

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 854288561 - 2² = 854288557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (854288521) 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, 61020605 + ... + 61020618.

It is an arithmetic number, because the mean of its divisors is an integer number (244082448).

Almost surely, 2^854288561 is an apocalyptic number.

It is an amenable number.

854288561 is a deficient number, since it is larger than the sum of its proper divisors (122041231).

854288561 is a wasteful number, since it uses less digits than its factorization.

854288561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122041230.

The product of its digits is 614400, while the sum is 47.

The square root of 854288561 is about 29228.2151524858. The cubic root of 854288561 is about 948.8586703533.

The spelling of 854288561 in words is "eight hundred fifty-four million, two hundred eighty-eight thousand, five hundred sixty-one".