544245551 has 2 divisors, whose sum is σ = 544245552. Its totient is φ = 544245550.

The previous prime is 544245547. The next prime is 544245553. The reversal of 544245551 is 155542445.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 544245551 - 2² = 544245547 is a prime.

Together with 544245553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544245553) 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, 272122775 + 272122776.

It is an arithmetic number, because the mean of its divisors is an integer number (272122776).

Almost surely, 2^544245551 is an apocalyptic number.

544245551 is a deficient number, since it is larger than the sum of its proper divisors (1).

544245551 is an equidigital number, since it uses as much as digits as its factorization.

544245551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80000, while the sum is 35.

The square root of 544245551 is about 23329.0709416385. The cubic root of 544245551 is about 816.4538272132.

Adding to 544245551 its reverse (155542445), we get a palindrome (699787996).

The spelling of 544245551 in words is "five hundred forty-four million, two hundred forty-five thousand, five hundred fifty-one".