2545447 has 2 divisors, whose sum is σ = 2545448. Its totient is φ = 2545446.

The previous prime is 2545429. The next prime is 2545451. The reversal of 2545447 is 7445452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2545447 - 2¹¹ = 2543399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2549447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272723 + 1272724.

It is an arithmetic number, because the mean of its divisors is an integer number (1272724).

2^2545447 is an apocalyptic number.

2545447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545447 is an equidigital number, since it uses as much as digits as its factorization.

2545447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 31.

The square root of 2545447 is about 1595.4457057512. The cubic root of 2545447 is about 136.5383613059.

It can be divided in two parts, 2545 and 447, that added together give a palindrome (2992).

The spelling of 2545447 in words is "two million, five hundred forty-five thousand, four hundred forty-seven".