1855401 has 8 divisors (see below), whose sum is σ = 2482944. Its totient is φ = 1232400.

The previous prime is 1855393. The next prime is 1855411. The reversal of 1855401 is 1045581.

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

It is not a de Polignac number, because 1855401 - 2³ = 1855393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1855411) 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, 25 + ... + 1926.

It is an arithmetic number, because the mean of its divisors is an integer number (310368).

2^1855401 is an apocalyptic number.

It is an amenable number.

1855401 is a deficient number, since it is larger than the sum of its proper divisors (627543).

1855401 is a wasteful number, since it uses less digits than its factorization.

1855401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1855401 is about 1362.1310509639. The cubic root of 1855401 is about 122.8794509312.

The spelling of 1855401 in words is "one million, eight hundred fifty-five thousand, four hundred one".