855521353 has 4 divisors (see below), whose sum is σ = 883118848. Its totient is φ = 827923860.

The previous prime is 855521351. The next prime is 855521369. The reversal of 855521353 is 353125558.

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 855521353 - 2¹ = 855521351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855521351) 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, 13798701 + ... + 13798762.

It is an arithmetic number, because the mean of its divisors is an integer number (220779712).

Almost surely, 2^855521353 is an apocalyptic number.

It is an amenable number.

855521353 is a deficient number, since it is larger than the sum of its proper divisors (27597495).

855521353 is a wasteful number, since it uses less digits than its factorization.

855521353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27597494.

The product of its digits is 90000, while the sum is 37.

The square root of 855521353 is about 29249.2966240216. The cubic root of 855521353 is about 949.3148718485.

The spelling of 855521353 in words is "eight hundred fifty-five million, five hundred twenty-one thousand, three hundred fifty-three".