2543545631 has 8 divisors (see below), whose sum is σ = 2827131984. Its totient is φ = 2268685120.

The previous prime is 2543545607. The next prime is 2543545633. The reversal of 2543545631 is 1365453452.

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

It is a cyclic number.

It is not a de Polignac number, because 2543545631 - 2³⁰ = 1469803807 is a prime.

It is a super-2 number, since 2×2543545631² = 12939248753958376322, which contains 22 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 (2543545633) 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, 2180846 + ... + 2182011.

It is an arithmetic number, because the mean of its divisors is an integer number (353391498).

Almost surely, 2^2543545631 is an apocalyptic number.

2543545631 is a deficient number, since it is larger than the sum of its proper divisors (283586353).

2543545631 is a wasteful number, since it uses less digits than its factorization.

2543545631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362921.

The product of its digits is 216000, while the sum is 38.

The square root of 2543545631 is about 50433.5764248382. The cubic root of 2543545631 is about 1365.0435621443.

The spelling of 2543545631 in words is "two billion, five hundred forty-three million, five hundred forty-five thousand, six hundred thirty-one".