2257556 has 12 divisors (see below), whose sum is σ = 4515168. Its totient is φ = 967512.

The previous prime is 2257553. The next prime is 2257559. The reversal of 2257556 is 6557522.

It is an interprime number because it is at equal distance from previous prime (2257553) and next prime (2257559).

2257556 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2² + 2¹³ + 5⁴ + 7² + 5⁶ + 5⁹ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40286 + ... + 40341.

It is an arithmetic number, because the mean of its divisors is an integer number (376264).

2^2257556 is an apocalyptic number.

It is an amenable number.

2257556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2257556 is a wasteful number, since it uses less digits than its factorization.

2257556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80638 (or 80636 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 2257556 is about 1502.5165556492. The cubic root of 2257556 is about 131.1835896836.

The spelling of 2257556 in words is "two million, two hundred fifty-seven thousand, five hundred fifty-six".