654252449 has 2 divisors, whose sum is σ = 654252450. Its totient is φ = 654252448.

The previous prime is 654252409. The next prime is 654252493. The reversal of 654252449 is 944252456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499075600 + 155176849 = 22340^2 + 12457^2 .

It is a cyclic number.

It is not a de Polignac number, because 654252449 - 2²⁸ = 385816993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654252409) 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 as a sum of consecutive naturals, namely, 327126224 + 327126225.

It is an arithmetic number, because the mean of its divisors is an integer number (327126225).

Almost surely, 2^654252449 is an apocalyptic number.

It is an amenable number.

654252449 is a deficient number, since it is larger than the sum of its proper divisors (1).

654252449 is an equidigital number, since it uses as much as digits as its factorization.

654252449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 41.

The square root of 654252449 is about 25578.3589974025. The cubic root of 654252449 is about 868.1240456589.

The spelling of 654252449 in words is "six hundred fifty-four million, two hundred fifty-two thousand, four hundred forty-nine".