2545775 has 12 divisors (see below), whose sum is σ = 3199200. Its totient is φ = 2009280.

The previous prime is 2545771. The next prime is 2545783. The reversal of 2545775 is 5775452.

It is a happy number.

It is not a de Polignac number, because 2545775 - 2² = 2545771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1331 + ... + 2619.

It is an arithmetic number, because the mean of its divisors is an integer number (266600).

2^2545775 is an apocalyptic number.

2545775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2545775 is a deficient number, since it is larger than the sum of its proper divisors (653425).

2545775 is a wasteful number, since it uses less digits than its factorization.

2545775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1373 counting only the distinct ones).

The product of its digits is 49000, while the sum is 35.

The square root of 2545775 is about 1595.5484950324. The cubic root of 2545775 is about 136.5442257191.

The spelling of 2545775 in words is "two million, five hundred forty-five thousand, seven hundred seventy-five".