855251 has 4 divisors (see below), whose sum is σ = 863352. Its totient is φ = 847152.

The previous prime is 855241. The next prime is 855269. The reversal of 855251 is 152558.

855251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 855251 - 2⁶ = 855187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 855251.

It is not an unprimeable number, because it can be changed into a prime (855221) 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, 3890 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (215838).

2⁸⁵⁵²⁵¹ is an apocalyptic number.

855251 is a deficient number, since it is larger than the sum of its proper divisors (8101).

855251 is a wasteful number, since it uses less digits than its factorization.

855251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8100.

The product of its digits is 2000, while the sum is 26.

The square root of 855251 is about 924.7978157414. The cubic root of 855251 is about 94.9214863761.

The spelling of 855251 in words is "eight hundred fifty-five thousand, two hundred fifty-one".