855542 has 8 divisors (see below), whose sum is σ = 1358856. Its totient is φ = 402592.

The previous prime is 855527. The next prime is 855581. The reversal of 855542 is 245558.

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

It is a super-2 number, since 2×855542² = 1463904227528, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12548 + ... + 12615.

It is an arithmetic number, because the mean of its divisors is an integer number (169857).

2⁸⁵⁵⁵⁴² is an apocalyptic number.

855542 is a deficient number, since it is larger than the sum of its proper divisors (503314).

855542 is a wasteful number, since it uses less digits than its factorization.

855542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25182.

The product of its digits is 8000, while the sum is 29.

The square root of 855542 is about 924.9551340471. The cubic root of 855542 is about 94.9322508652.

The spelling of 855542 in words is "eight hundred fifty-five thousand, five hundred forty-two".