2557996 has 36 divisors (see below), whose sum is σ = 5388096. Its totient is φ = 1058400.

The previous prime is 2557967. The next prime is 2557999. The reversal of 2557996 is 6997552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2557999) 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, 5866 + ... + 6286.

2^2557996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2557996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2694048).

2557996 is an abundant number, since it is smaller than the sum of its proper divisors (2830100).

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

2557996 is a wasteful number, since it uses less digits than its factorization.

2557996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 461 counting only the distinct ones).

The product of its digits is 170100, while the sum is 43.

The square root of 2557996 is about 1599.3736273929. The cubic root of 2557996 is about 136.7623706678.

It can be divided in two parts, 2557 and 996, that added together give a palindrome (3553).

The spelling of 2557996 in words is "two million, five hundred fifty-seven thousand, nine hundred ninety-six".