2557122 has 16 divisors (see below), whose sum is σ = 5191392. Its totient is φ = 839520.

The previous prime is 2557111. The next prime is 2557127. The reversal of 2557122 is 2217552.

It is a junction number, because it is equal to n+sod(n) for n = 2557092 and 2557101.

It is not an unprimeable number, because it can be changed into a prime (2557127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779 + ... + 3582.

It is an arithmetic number, because the mean of its divisors is an integer number (324462).

2^2557122 is an apocalyptic number.

2557122 is an abundant number, since it is smaller than the sum of its proper divisors (2634270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2557122 is a wasteful number, since it uses less digits than its factorization.

2557122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433.

The product of its digits is 1400, while the sum is 24.

The square root of 2557122 is about 1599.1003720843. The cubic root of 2557122 is about 136.7467928577.

The spelling of 2557122 in words is "two million, five hundred fifty-seven thousand, one hundred twenty-two".