2043557 has 4 divisors (see below), whose sum is σ = 2059776. Its totient is φ = 2027340.

The previous prime is 2043541. The next prime is 2043571. The reversal of 2043557 is 7553402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2043557 - 2⁴ = 2043541 is a prime.

It is a super-2 number, since 2×2043557² = 8352250424498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7919 + ... + 8172.

It is an arithmetic number, because the mean of its divisors is an integer number (514944).

2^2043557 is an apocalyptic number.

It is an amenable number.

2043557 is a deficient number, since it is larger than the sum of its proper divisors (16219).

2043557 is a wasteful number, since it uses less digits than its factorization.

2043557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16218.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 2043557 is about 1429.5303424552. The cubic root of 2043557 is about 126.9001840371.

Adding to 2043557 its reverse (7553402), we get a palindrome (9596959).

The spelling of 2043557 in words is "two million, forty-three thousand, five hundred fifty-seven".