2545657 has 2 divisors, whose sum is σ = 2545658. Its totient is φ = 2545656.

The previous prime is 2545651. The next prime is 2545679. The reversal of 2545657 is 7565452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2524921 + 20736 = 1589^2 + 144^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545657 - 2¹¹ = 2543609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2545651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272828 + 1272829.

It is an arithmetic number, because the mean of its divisors is an integer number (1272829).

2^2545657 is an apocalyptic number.

It is an amenable number.

2545657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545657 is an equidigital number, since it uses as much as digits as its factorization.

2545657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 34.

The square root of 2545657 is about 1595.5115167243. The cubic root of 2545657 is about 136.5421160187.

The spelling of 2545657 in words is "two million, five hundred forty-five thousand, six hundred fifty-seven".