2557330 has 8 divisors (see below), whose sum is σ = 4603212. Its totient is φ = 1022928.

The previous prime is 2557297. The next prime is 2557333. The reversal of 2557330 is 337552.

It can be written as a sum of positive squares in 2 ways, for example, as 2556801 + 529 = 1599^2 + 23^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2557295 and 2557304.

It is not an unprimeable number, because it can be changed into a prime (2557333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127857 + ... + 127876.

2^2557330 is an apocalyptic number.

2557330 is a deficient number, since it is larger than the sum of its proper divisors (2045882).

2557330 is a wasteful number, since it uses less digits than its factorization.

2557330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255740.

The product of its (nonzero) digits is 3150, while the sum is 25.

The square root of 2557330 is about 1599.1654073297. The cubic root of 2557330 is about 136.7505004845.

The spelling of 2557330 in words is "two million, five hundred fifty-seven thousand, three hundred thirty".