2557545 has 8 divisors (see below), whose sum is σ = 4092096. Its totient is φ = 1364016.

The previous prime is 2557519. The next prime is 2557553. The reversal of 2557545 is 5457552.

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

It is not a de Polignac number, because 2557545 - 2⁷ = 2557417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85237 + ... + 85266.

It is an arithmetic number, because the mean of its divisors is an integer number (511512).

2^2557545 is an apocalyptic number.

It is an amenable number.

2557545 is a deficient number, since it is larger than the sum of its proper divisors (1534551).

2557545 is a wasteful number, since it uses less digits than its factorization.

2557545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170511.

The product of its digits is 35000, while the sum is 33.

The square root of 2557545 is about 1599.2326284815. The cubic root of 2557545 is about 136.7543326758.

The spelling of 2557545 in words is "two million, five hundred fifty-seven thousand, five hundred forty-five".