2543455451 has 4 divisors (see below), whose sum is σ = 2585151504. Its totient is φ = 2501759400.

The previous prime is 2543455373. The next prime is 2543455457. The reversal of 2543455451 is 1545543452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2543455451 - 2²² = 2539261147 is a prime.

It is a super-2 number, since 2×2543455451² = 12938331262443226802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543455457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20847935 + ... + 20848056.

It is an arithmetic number, because the mean of its divisors is an integer number (646287876).

Almost surely, 2^2543455451 is an apocalyptic number.

2543455451 is a deficient number, since it is larger than the sum of its proper divisors (41696053).

2543455451 is an equidigital number, since it uses as much as digits as its factorization.

2543455451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41696052.

The product of its digits is 240000, while the sum is 38.

The square root of 2543455451 is about 50432.6823696698. The cubic root of 2543455451 is about 1365.0274296661.

The spelling of 2543455451 in words is "two billion, five hundred forty-three million, four hundred fifty-five thousand, four hundred fifty-one".