2555226 has 20 divisors (see below), whose sum is σ = 5725962. Its totient is φ = 851688.

The previous prime is 2555221. The next prime is 2555227. The reversal of 2555226 is 6225552.

It can be written as a sum of positive squares in only one way, i.e., 2099601 + 455625 = 1449^2 + 675^2 .

It is a super-2 number, since 2×2555226² = 13058359822152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2555226.

It is not an unprimeable number, because it can be changed into a prime (2555221) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7725 + ... + 8048.

2^2555226 is an apocalyptic number.

2555226 is an abundant number, since it is smaller than the sum of its proper divisors (3170736).

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

2555226 is a wasteful number, since it uses less digits than its factorization.

2555226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15787 (or 15778 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 2555226 is about 1598.5074288223. The cubic root of 2555226 is about 136.7129871410.

The spelling of 2555226 in words is "two million, five hundred fifty-five thousand, two hundred twenty-six".