855545197 has 8 divisors (see below), whose sum is σ = 922192544. Its totient is φ = 789017328.

The previous prime is 855545147. The next prime is 855545219. The reversal of 855545197 is 791545558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 855545197 - 2¹⁵ = 855512429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 855545197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855545137) 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 7 ways as a sum of consecutive naturals, for example, 14703 + ... + 43900.

It is an arithmetic number, because the mean of its divisors is an integer number (115274068).

Almost surely, 2^855545197 is an apocalyptic number.

It is an amenable number.

855545197 is a deficient number, since it is larger than the sum of its proper divisors (66647347).

855545197 is a wasteful number, since it uses less digits than its factorization.

855545197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59739.

The product of its digits is 1260000, while the sum is 49.

The square root of 855545197 is about 29249.7042207267. The cubic root of 855545197 is about 949.3236911311.

The spelling of 855545197 in words is "eight hundred fifty-five million, five hundred forty-five thousand, one hundred ninety-seven".