2112557 has 4 divisors (see below), whose sum is σ = 2180736. Its totient is φ = 2044380.

The previous prime is 2112541. The next prime is 2112569. The reversal of 2112557 is 7552112.

It is a happy number.

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 2112557 - 2⁴ = 2112541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112587) 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, 34043 + ... + 34104.

It is an arithmetic number, because the mean of its divisors is an integer number (545184).

2^2112557 is an apocalyptic number.

It is an amenable number.

2112557 is a deficient number, since it is larger than the sum of its proper divisors (68179).

2112557 is an equidigital number, since it uses as much as digits as its factorization.

2112557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68178.

The product of its digits is 700, while the sum is 23.

The square root of 2112557 is about 1453.4637938387. The cubic root of 2112557 is about 128.3126512275.

Adding to 2112557 its reverse (7552112), we get a palindrome (9664669).

The spelling of 2112557 in words is "two million, one hundred twelve thousand, five hundred fifty-seven".