2125557 has 12 divisors (see below), whose sum is σ = 3508960. Its totient is φ = 1214568.

The previous prime is 2125553. The next prime is 2125559. The reversal of 2125557 is 7555212.

It is a happy number.

It is not a de Polignac number, because 2125557 - 2² = 2125553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2125557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16807 + ... + 16932.

2^2125557 is an apocalyptic number.

It is an amenable number.

2125557 is a deficient number, since it is larger than the sum of its proper divisors (1383403).

2125557 is a wasteful number, since it uses less digits than its factorization.

2125557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33752 (or 33749 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 2125557 is about 1457.9290106175. The cubic root of 2125557 is about 128.5753115229.

It can be divided in two parts, 21255 and 57, that added together give a palindrome (21312).

The spelling of 2125557 in words is "two million, one hundred twenty-five thousand, five hundred fifty-seven".