853856553 has 16 divisors (see below), whose sum is σ = 1265409216. Its totient is φ = 507723840.

The previous prime is 853856533. The next prime is 853856557. The reversal of 853856553 is 355658358.

It is not a de Polignac number, because 853856553 - 2¹³ = 853848361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (853856557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242350 + ... + 245847.

It is an arithmetic number, because the mean of its divisors is an integer number (79088076).

Almost surely, 2^853856553 is an apocalyptic number.

It is an amenable number.

853856553 is a deficient number, since it is larger than the sum of its proper divisors (411552663).

853856553 is a wasteful number, since it uses less digits than its factorization.

853856553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488264.

The product of its digits is 2160000, while the sum is 48.

The square root of 853856553 is about 29220.8239616887. The cubic root of 853856553 is about 948.6986995614.

The spelling of 853856553 in words is "eight hundred fifty-three million, eight hundred fifty-six thousand, five hundred fifty-three".