1855542 has 16 divisors (see below), whose sum is σ = 3996720. Its totient is φ = 570912.

The previous prime is 1855541. The next prime is 1855549. The reversal of 1855542 is 2455581.

It is a super-2 number, since 2×1855542² = 6886072227528, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855541) 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, 11817 + ... + 11972.

It is an arithmetic number, because the mean of its divisors is an integer number (249795).

2^1855542 is an apocalyptic number.

1855542 is an abundant number, since it is smaller than the sum of its proper divisors (2141178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1855542 is a wasteful number, since it uses less digits than its factorization.

1855542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23807.

The product of its digits is 8000, while the sum is 30.

The square root of 1855542 is about 1362.1828071151. The cubic root of 1855542 is about 122.8825635672.

The spelling of 1855542 in words is "one million, eight hundred fifty-five thousand, five hundred forty-two".