244664551 has 2 divisors, whose sum is σ = 244664552. Its totient is φ = 244664550.

The previous prime is 244664543. The next prime is 244664557. The reversal of 244664551 is 155466442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 244664551 - 2³ = 244664543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244664551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244664557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122332275 + 122332276.

It is an arithmetic number, because the mean of its divisors is an integer number (122332276).

Almost surely, 2^244664551 is an apocalyptic number.

244664551 is a deficient number, since it is larger than the sum of its proper divisors (1).

244664551 is an equidigital number, since it uses as much as digits as its factorization.

244664551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 37.

The square root of 244664551 is about 15641.7566468731. The cubic root of 244664551 is about 625.4467640869.

The spelling of 244664551 in words is "two hundred forty-four million, six hundred sixty-four thousand, five hundred fifty-one".