2557964 has 6 divisors (see below), whose sum is σ = 4476444. Its totient is φ = 1278980.

The previous prime is 2557963. The next prime is 2557967. The reversal of 2557964 is 4697552.

It is a happy number.

It is a d-powerful number, because it can be written as 2⁵ + 5 + 5⁹ + 7² + 9⁶ + 6⁵ + 4⁸ .

It is not an unprimeable number, because it can be changed into a prime (2557963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319742 + ... + 319749.

It is an arithmetic number, because the mean of its divisors is an integer number (746074).

2^2557964 is an apocalyptic number.

It is an amenable number.

2557964 is a deficient number, since it is larger than the sum of its proper divisors (1918480).

2557964 is a wasteful number, since it uses less digits than its factorization.

2557964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639495 (or 639493 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 2557964 is about 1599.3636234453. The cubic root of 2557964 is about 136.7618003758.

The spelling of 2557964 in words is "two million, five hundred fifty-seven thousand, nine hundred sixty-four".