2557622 has 4 divisors (see below), whose sum is σ = 3836436. Its totient is φ = 1278810.

The previous prime is 2557613. The next prime is 2557631. The reversal of 2557622 is 2267552.

2557622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2557613) and next prime (2557631).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639404 + ... + 639407.

It is an arithmetic number, because the mean of its divisors is an integer number (959109).

2^2557622 is an apocalyptic number.

2557622 is a deficient number, since it is larger than the sum of its proper divisors (1278814).

2557622 is a wasteful number, since it uses less digits than its factorization.

2557622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278813.

The product of its digits is 8400, while the sum is 29.

The square root of 2557622 is about 1599.2567023464. The cubic root of 2557622 is about 136.7557050828.

The spelling of 2557622 in words is "two million, five hundred fifty-seven thousand, six hundred twenty-two".