2545743971 has 2 divisors, whose sum is σ = 2545743972. Its totient is φ = 2545743970.

The previous prime is 2545743961. The next prime is 2545744027. The reversal of 2545743971 is 1793475452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2545743971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2545743961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272871985 + 1272871986.

It is an arithmetic number, because the mean of its divisors is an integer number (1272871986).

Almost surely, 2^2545743971 is an apocalyptic number.

2545743971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545743971 is an equidigital number, since it uses as much as digits as its factorization.

2545743971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 47.

The square root of 2545743971 is about 50455.3661269047. The cubic root of 2545743971 is about 1365.4367096365.

The spelling of 2545743971 in words is "two billion, five hundred forty-five million, seven hundred forty-three thousand, nine hundred seventy-one".