2545771 has 2 divisors, whose sum is σ = 2545772. Its totient is φ = 2545770.

The previous prime is 2545769. The next prime is 2545783. The reversal of 2545771 is 1775452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545771 - 2¹ = 2545769 is a prime.

Together with 2545769, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2545171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272885 + 1272886.

It is an arithmetic number, because the mean of its divisors is an integer number (1272886).

2^2545771 is an apocalyptic number.

2545771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545771 is an equidigital number, since it uses as much as digits as its factorization.

2545771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 31.

The square root of 2545771 is about 1595.5472415444. The cubic root of 2545771 is about 136.5441542049.

It can be divided in two parts, 25 and 45771, that added together give a square (45796 = 214²).

The spelling of 2545771 in words is "two million, five hundred forty-five thousand, seven hundred seventy-one".