2557324 has 72 divisors (see below), whose sum is σ = 6144768. Its totient is φ = 902880.

The previous prime is 2557297. The next prime is 2557333. The reversal of 2557324 is 4237552.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a d-powerful number, because it can be written as 2⁹ + 5⁷ + 5⁹ + 7 + 3⁵ + 2¹⁹ + 4⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 2557292 and 2557301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111177 + ... + 111199.

It is an arithmetic number, because the mean of its divisors is an integer number (85344).

2^2557324 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 2557324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3072384).

2557324 is an abundant number, since it is smaller than the sum of its proper divisors (3587444).

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

2557324 is a wasteful number, since it uses less digits than its factorization.

2557324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 62 counting only the distinct ones).

The product of its digits is 8400, while the sum is 28.

The square root of 2557324 is about 1599.1635313501. The cubic root of 2557324 is about 136.7503935365.

The spelling of 2557324 in words is "two million, five hundred fifty-seven thousand, three hundred twenty-four".