1855456 has 24 divisors (see below), whose sum is σ = 3813264. Its totient is φ = 887040.

The previous prime is 1855423. The next prime is 1855457. The reversal of 1855456 is 6545581.

It is a happy number.

It is a nialpdrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525 + ... + 1996.

It is an arithmetic number, because the mean of its divisors is an integer number (158886).

2^1855456 is an apocalyptic number.

1855456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1855456 is the 862-nd centered pentagonal number.

It is an amenable number.

1855456 is an abundant number, since it is smaller than the sum of its proper divisors (1957808).

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

1855456 is a wasteful number, since it uses less digits than its factorization.

1855456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554 (or 2546 counting only the distinct ones).

The product of its digits is 24000, while the sum is 34.

The square root of 1855456 is about 1362.1512397674. The cubic root of 1855456 is about 122.8806650988.

The spelling of 1855456 in words is "one million, eight hundred fifty-five thousand, four hundred fifty-six".