144111551 has 2 divisors, whose sum is σ = 144111552. Its totient is φ = 144111550.

The previous prime is 144111521. The next prime is 144111557. The reversal of 144111551 is 155111441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144111551 - 2²² = 139917247 is a prime.

It is a super-4 number, since 4×144111551⁴ (a number of 34 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144111557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72055775 + 72055776.

It is an arithmetic number, because the mean of its divisors is an integer number (72055776).

Almost surely, 2^144111551 is an apocalyptic number.

144111551 is a deficient number, since it is larger than the sum of its proper divisors (1).

144111551 is an equidigital number, since it uses as much as digits as its factorization.

144111551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 400, while the sum is 23.

The square root of 144111551 is about 12004.6470585353. The cubic root of 144111551 is about 524.2835894279.

Adding to 144111551 its reverse (155111441), we get a palindrome (299222992).

The spelling of 144111551 in words is "one hundred forty-four million, one hundred eleven thousand, five hundred fifty-one".