144572261 has 2 divisors, whose sum is σ = 144572262. Its totient is φ = 144572260.

The previous prime is 144572249. The next prime is 144572269. The reversal of 144572261 is 162275441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88247236 + 56325025 = 9394^2 + 7505^2 .

It is an emirp because it is prime and its reverse (162275441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144572261 - 2¹⁰ = 144571237 is a prime.

It is a super-2 number, since 2×144572261² = 41802277301304242, which contains 22 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 (144572269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72286130 + 72286131.

It is an arithmetic number, because the mean of its divisors is an integer number (72286131).

Almost surely, 2^144572261 is an apocalyptic number.

It is an amenable number.

144572261 is a deficient number, since it is larger than the sum of its proper divisors (1).

144572261 is an equidigital number, since it uses as much as digits as its factorization.

144572261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 32.

The square root of 144572261 is about 12023.8205658601. The cubic root of 144572261 is about 524.8416889260.

The spelling of 144572261 in words is "one hundred forty-four million, five hundred seventy-two thousand, two hundred sixty-one".