2545566791 has 16 divisors (see below), whose sum is σ = 2834694144. Its totient is φ = 2273572224.

The previous prime is 2545566769. The next prime is 2545566797. The reversal of 2545566791 is 1976655452.

2545566791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2545566791 - 2¹⁴ = 2545550407 is a prime.

It is a super-3 number, since 3×2545566791³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545566797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24026 + ... + 75288.

It is an arithmetic number, because the mean of its divisors is an integer number (177168384).

Almost surely, 2^2545566791 is an apocalyptic number.

2545566791 is a deficient number, since it is larger than the sum of its proper divisors (289127353).

2545566791 is a wasteful number, since it uses less digits than its factorization.

2545566791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51430.

The product of its digits is 2268000, while the sum is 50.

The square root of 2545566791 is about 50453.6102870746. The cubic root of 2545566791 is about 1365.4050314458.

The spelling of 2545566791 in words is "two billion, five hundred forty-five million, five hundred sixty-six thousand, seven hundred ninety-one".