2545863 has 8 divisors (see below), whose sum is σ = 3412848. Its totient is φ = 1688064.

The previous prime is 2545861. The next prime is 2545883. The reversal of 2545863 is 3685452.

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

It is not a de Polignac number, because 2545863 - 2¹ = 2545861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545861) 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, 1620 + ... + 2777.

It is an arithmetic number, because the mean of its divisors is an integer number (426606).

2^2545863 is an apocalyptic number.

2545863 is a deficient number, since it is larger than the sum of its proper divisors (866985).

2545863 is a wasteful number, since it uses less digits than its factorization.

2545863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593.

The product of its digits is 28800, while the sum is 33.

The square root of 2545863 is about 1595.5760715177. The cubic root of 2545863 is about 136.5457990126.

Adding to 2545863 its sum of digits (33), we get a triangular number (2545896 = T₂₂₅₆).

The spelling of 2545863 in words is "two million, five hundred forty-five thousand, eight hundred sixty-three".