2557970 has 16 divisors (see below), whose sum is σ = 4847040. Its totient is φ = 969264.

The previous prime is 2557967. The next prime is 2557999. The reversal of 2557970 is 797552.

It is a self number, because there is not a number n which added to its sum of digits gives 2557970.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 6542 + ... + 6921.

It is an arithmetic number, because the mean of its divisors is an integer number (302940).

2^2557970 is an apocalyptic number.

2557970 is a deficient number, since it is larger than the sum of its proper divisors (2289070).

2557970 is a wasteful number, since it uses less digits than its factorization.

2557970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13489.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 2557970 is about 1599.3654991902. The cubic root of 2557970 is about 136.7619073059.

The spelling of 2557970 in words is "two million, five hundred fifty-seven thousand, nine hundred seventy".