2251785 has 16 divisors (see below), whose sum is σ = 3792960. Its totient is φ = 1137600.

The previous prime is 2251771. The next prime is 2251807. The reversal of 2251785 is 5871522.

It is not a de Polignac number, because 2251785 - 2¹⁰ = 2250761 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3666 + ... + 4235.

It is an arithmetic number, because the mean of its divisors is an integer number (237060).

2^2251785 is an apocalyptic number.

It is an amenable number.

2251785 is a deficient number, since it is larger than the sum of its proper divisors (1541175).

2251785 is a wasteful number, since it uses less digits than its factorization.

2251785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928.

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

The square root of 2251785 is about 1500.5948820385. The cubic root of 2251785 is about 131.0717125760.

The spelling of 2251785 in words is "two million, two hundred fifty-one thousand, seven hundred eighty-five".