855541 has 8 divisors (see below), whose sum is σ = 887040. Its totient is φ = 824688.

The previous prime is 855527. The next prime is 855581. The reversal of 855541 is 145558.

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 855541 - 2¹¹ = 853493 is a prime.

It is a Duffinian number.

855541 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5040 + ... + 5206.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2⁸⁵⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

855541 is a deficient number, since it is larger than the sum of its proper divisors (31499).

855541 is a wasteful number, since it uses less digits than its factorization.

855541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its digits is 4000, while the sum is 28.

The square root of 855541 is about 924.9545934801. The cubic root of 855541 is about 94.9322138781.

The spelling of 855541 in words is "eight hundred fifty-five thousand, five hundred forty-one".