2557633 has 16 divisors (see below), whose sum is σ = 2975616. Its totient is φ = 2177280.

The previous prime is 2557631. The next prime is 2557649. The reversal of 2557633 is 3367552.

It is a cyclic number.

It is not a de Polignac number, because 2557633 - 2¹ = 2557631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2557595 and 2557604.

It is not an unprimeable number, because it can be changed into a prime (2557631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15610 + ... + 15772.

It is an arithmetic number, because the mean of its divisors is an integer number (185976).

2^2557633 is an apocalyptic number.

It is an amenable number.

2557633 is a deficient number, since it is larger than the sum of its proper divisors (417983).

2557633 is a wasteful number, since it uses less digits than its factorization.

2557633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264.

The product of its digits is 18900, while the sum is 31.

The square root of 2557633 is about 1599.2601414404. The cubic root of 2557633 is about 136.7559011387.

The spelling of 2557633 in words is "two million, five hundred fifty-seven thousand, six hundred thirty-three".