2149556 has 12 divisors (see below), whose sum is σ = 3783780. Its totient is φ = 1068480.

The previous prime is 2149517. The next prime is 2149559. The reversal of 2149556 is 6559412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17956 + 2131600 = 134^2 + 1460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149559) 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, 761 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (315315).

2^2149556 is an apocalyptic number.

It is an amenable number.

2149556 is a deficient number, since it is larger than the sum of its proper divisors (1634224).

2149556 is a wasteful number, since it uses less digits than its factorization.

2149556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154 (or 3152 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 2149556 is about 1466.1364193007. The cubic root of 2149556 is about 129.0574028927.

The spelling of 2149556 in words is "two million, one hundred forty-nine thousand, five hundred fifty-six".