144531197 has 2 divisors, whose sum is σ = 144531198. Its totient is φ = 144531196.

The previous prime is 144531173. The next prime is 144531199. The reversal of 144531197 is 791135441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122899396 + 21631801 = 11086^2 + 4651^2 .

It is an emirp because it is prime and its reverse (791135441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144531197 - 2¹⁴ = 144514813 is a prime.

Together with 144531199, 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 (144531199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72265598 + 72265599.

It is an arithmetic number, because the mean of its divisors is an integer number (72265599).

Almost surely, 2^144531197 is an apocalyptic number.

It is an amenable number.

144531197 is a deficient number, since it is larger than the sum of its proper divisors (1).

144531197 is an equidigital number, since it uses as much as digits as its factorization.

144531197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 144531197 is about 12022.1128342733. The cubic root of 144531197 is about 524.7919925785.

The spelling of 144531197 in words is "one hundred forty-four million, five hundred thirty-one thousand, one hundred ninety-seven".