2012557 has 4 divisors (see below), whose sum is σ = 2035260. Its totient is φ = 1989856.

The previous prime is 2012533. The next prime is 2012597. The reversal of 2012557 is 7552102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 617796 + 1394761 = 786^2 + 1181^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012557 - 2⁷ = 2012429 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 (2012597) 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, 11218 + ... + 11395.

It is an arithmetic number, because the mean of its divisors is an integer number (508815).

2^2012557 is an apocalyptic number.

It is an amenable number.

2012557 is a deficient number, since it is larger than the sum of its proper divisors (22703).

2012557 is an equidigital number, since it uses as much as digits as its factorization.

2012557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22702.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2012557 is about 1418.6461856291. The cubic root of 2012557 is about 126.2552355441.

Adding to 2012557 its reverse (7552102), we get a palindrome (9564659).

The spelling of 2012557 in words is "two million, twelve thousand, five hundred fifty-seven".