144540551 has 2 divisors, whose sum is σ = 144540552. Its totient is φ = 144540550.

The previous prime is 144540547. The next prime is 144540577. The reversal of 144540551 is 155045441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144540551 - 2² = 144540547 is a prime.

It is a Sophie Germain prime.

It is equal to p_8154263 and since 144540551 and 8154263 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144540521) 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, 72270275 + 72270276.

It is an arithmetic number, because the mean of its divisors is an integer number (72270276).

Almost surely, 2^144540551 is an apocalyptic number.

144540551 is a deficient number, since it is larger than the sum of its proper divisors (1).

144540551 is an equidigital number, since it uses as much as digits as its factorization.

144540551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 144540551 is about 12022.5018610936. The cubic root of 144540551 is about 524.8033137753.

Adding to 144540551 its reverse (155045441), we get a palindrome (299585992).

The spelling of 144540551 in words is "one hundred forty-four million, five hundred forty thousand, five hundred fifty-one".