2557126 has 16 divisors (see below), whose sum is σ = 4506768. Its totient is φ = 1072800.

The previous prime is 2557111. The next prime is 2557127. The reversal of 2557126 is 6217552.

It is a junction number, because it is equal to n+sod(n) for n = 2557094 and 2557103.

It is a congruent number.

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, 4185 + ... + 4756.

It is an arithmetic number, because the mean of its divisors is an integer number (281673).

2^2557126 is an apocalyptic number.

2557126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2557126 is a deficient number, since it is larger than the sum of its proper divisors (1949642).

2557126 is a wasteful number, since it uses less digits than its factorization.

2557126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8967.

The product of its digits is 4200, while the sum is 28.

The square root of 2557126 is about 1599.1016227870. The cubic root of 2557126 is about 136.7468641601.

It can be divided in two parts, 255 and 7126, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 2557126 in words is "two million, five hundred fifty-seven thousand, one hundred twenty-six".