2551822 has 24 divisors (see below), whose sum is σ = 4797576. Its totient is φ = 1009008.

The previous prime is 2551817. The next prime is 2551823. The reversal of 2551822 is 2281552.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273 + ... + 2275.

It is an arithmetic number, because the mean of its divisors is an integer number (199899).

2^2551822 is an apocalyptic number.

2551822 is a deficient number, since it is larger than the sum of its proper divisors (2245754).

2551822 is a wasteful number, since it uses less digits than its factorization.

2551822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032 (or 2025 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 2551822 is about 1597.4423307275. The cubic root of 2551822 is about 136.6522517680.

The spelling of 2551822 in words is "two million, five hundred fifty-one thousand, eight hundred twenty-two".