2557266 has 8 divisors (see below), whose sum is σ = 5114544. Its totient is φ = 852420.

The previous prime is 2557241. The next prime is 2557273. The reversal of 2557266 is 6627552.

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

2557266 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213100 + ... + 213111.

It is an arithmetic number, because the mean of its divisors is an integer number (639318).

2^2557266 is an apocalyptic number.

2557266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2557266 is a wasteful number, since it uses less digits than its factorization.

2557266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426216.

The product of its digits is 25200, while the sum is 33.

The square root of 2557266 is about 1599.1453967667. The cubic root of 2557266 is about 136.7493596976.

It can be divided in two parts, 25 and 57266, that added together give a triangular number (57291 = T₃₃₈).

The spelling of 2557266 in words is "two million, five hundred fifty-seven thousand, two hundred sixty-six".