144364621 has 2 divisors, whose sum is σ = 144364622. Its totient is φ = 144364620.

The previous prime is 144364609. The next prime is 144364637. The reversal of 144364621 is 126463441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139476100 + 4888521 = 11810^2 + 2211^2 .

It is a cyclic number.

It is not a de Polignac number, because 144364621 - 2¹⁷ = 144233549 is a prime.

It is a super-2 number, since 2×144364621² = 41682287592947282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144364021) 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, 72182310 + 72182311.

It is an arithmetic number, because the mean of its divisors is an integer number (72182311).

Almost surely, 2^144364621 is an apocalyptic number.

It is an amenable number.

144364621 is a deficient number, since it is larger than the sum of its proper divisors (1).

144364621 is an equidigital number, since it uses as much as digits as its factorization.

144364621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 144364621 is about 12015.1829366015. The cubic root of 144364621 is about 524.5903028902.

The spelling of 144364621 in words is "one hundred forty-four million, three hundred sixty-four thousand, six hundred twenty-one".