2043556 has 6 divisors (see below), whose sum is σ = 3576230. Its totient is φ = 1021776.

The previous prime is 2043541. The next prime is 2043571. The reversal of 2043556 is 6553402.

It is an interprime number because it is at equal distance from previous prime (2043541) and next prime (2043571).

It can be written as a sum of positive squares in only one way, i.e., 1664100 + 379456 = 1290^2 + 616^2 .

It is a super-2 number, since 2×2043556² = 8352242250272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2043556.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255441 + ... + 255448.

2^2043556 is an apocalyptic number.

It is an amenable number.

2043556 is a deficient number, since it is larger than the sum of its proper divisors (1532674).

2043556 is a wasteful number, since it uses less digits than its factorization.

2043556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510893 (or 510891 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2043556 is about 1429.5299926899. The cubic root of 2043556 is about 126.9001633379.

Adding to 2043556 its reverse (6553402), we get a palindrome (8596958).

The spelling of 2043556 in words is "two million, forty-three thousand, five hundred fifty-six".