2566545 has 8 divisors (see below), whose sum is σ = 4106496. Its totient is φ = 1368816.

The previous prime is 2566519. The next prime is 2566549. The reversal of 2566545 is 5456652.

It is a happy number.

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

It is not a de Polignac number, because 2566545 - 2⁵ = 2566513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2566549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85537 + ... + 85566.

It is an arithmetic number, because the mean of its divisors is an integer number (513312).

2^2566545 is an apocalyptic number.

It is an amenable number.

2566545 is a deficient number, since it is larger than the sum of its proper divisors (1539951).

2566545 is a wasteful number, since it uses less digits than its factorization.

2566545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171111.

The product of its digits is 36000, while the sum is 33.

The square root of 2566545 is about 1602.0440068862. The cubic root of 2566545 is about 136.9145576956.

The spelling of 2566545 in words is "two million, five hundred sixty-six thousand, five hundred forty-five".