2251857 has 8 divisors (see below), whose sum is σ = 3083776. Its totient is φ = 1460592.

The previous prime is 2251849. The next prime is 2251859. The reversal of 2251857 is 7581522.

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

It is not a de Polignac number, because 2251857 - 2³ = 2251849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251859) 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, 10033 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (385472).

2^2251857 is an apocalyptic number.

It is an amenable number.

2251857 is a deficient number, since it is larger than the sum of its proper divisors (831919).

2251857 is a wasteful number, since it uses less digits than its factorization.

2251857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20327.

The product of its digits is 5600, while the sum is 30.

The square root of 2251857 is about 1500.6188723323. The cubic root of 2251857 is about 131.0731095511.

The spelling of 2251857 in words is "two million, two hundred fifty-one thousand, eight hundred fifty-seven".