853453561 has 4 divisors (see below), whose sum is σ = 853530724. Its totient is φ = 853376400.

The previous prime is 853453519. The next prime is 853453607. The reversal of 853453561 is 165354358.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 254721600 + 598731961 = 15960^2 + 24469^2 .

It is a cyclic number.

It is not a de Polignac number, because 853453561 - 2⁹ = 853453049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853453961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18510 + ... + 45271.

It is an arithmetic number, because the mean of its divisors is an integer number (213382681).

Almost surely, 2^853453561 is an apocalyptic number.

It is an amenable number.

853453561 is a deficient number, since it is larger than the sum of its proper divisors (77163).

853453561 is a wasteful number, since it uses less digits than its factorization.

853453561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77162.

The product of its digits is 216000, while the sum is 40.

The square root of 853453561 is about 29213.9275175386. The cubic root of 853453561 is about 948.5494246245.

The spelling of 853453561 in words is "eight hundred fifty-three million, four hundred fifty-three thousand, five hundred sixty-one".