855260321 has 4 divisors (see below), whose sum is σ = 869281044. Its totient is φ = 841239600.

The previous prime is 855260317. The next prime is 855260347. The reversal of 855260321 is 123062558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 382632721 + 472627600 = 19561^2 + 21740^2 .

It is a cyclic number.

It is not a de Polignac number, because 855260321 - 2² = 855260317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855260521) 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, 7010270 + ... + 7010391.

It is an arithmetic number, because the mean of its divisors is an integer number (217320261).

Almost surely, 2^855260321 is an apocalyptic number.

It is an amenable number.

855260321 is a deficient number, since it is larger than the sum of its proper divisors (14020723).

855260321 is a wasteful number, since it uses less digits than its factorization.

855260321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14020722.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 855260321 is about 29244.8340908270. The cubic root of 855260321 is about 949.2183121053.

The spelling of 855260321 in words is "eight hundred fifty-five million, two hundred sixty thousand, three hundred twenty-one".