145332241 has 2 divisors, whose sum is σ = 145332242. Its totient is φ = 145332240.

The previous prime is 145332227. The next prime is 145332277. The reversal of 145332241 is 142233541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145323025 + 9216 = 12055^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 145332241 - 2⁹ = 145331729 is a prime.

It is a super-2 number, since 2×145332241² = 42242920548164162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145332211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72666120 + 72666121.

It is an arithmetic number, because the mean of its divisors is an integer number (72666121).

Almost surely, 2^145332241 is an apocalyptic number.

It is an amenable number.

145332241 is a deficient number, since it is larger than the sum of its proper divisors (1).

145332241 is an equidigital number, since it uses as much as digits as its factorization.

145332241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 145332241 is about 12055.3822419698. The cubic root of 145332241 is about 525.7597357207.

Adding to 145332241 its reverse (142233541), we get a palindrome (287565782).

The spelling of 145332241 in words is "one hundred forty-five million, three hundred thirty-two thousand, two hundred forty-one".