145533317 has 2 divisors, whose sum is σ = 145533318. Its totient is φ = 145533316.

The previous prime is 145533301. The next prime is 145533337. The reversal of 145533317 is 713335541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103205281 + 42328036 = 10159^2 + 6506^2 .

It is a cyclic number.

It is not a de Polignac number, because 145533317 - 2⁴ = 145533301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145533337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72766658 + 72766659.

It is an arithmetic number, because the mean of its divisors is an integer number (72766659).

Almost surely, 2^145533317 is an apocalyptic number.

It is an amenable number.

145533317 is a deficient number, since it is larger than the sum of its proper divisors (1).

145533317 is an equidigital number, since it uses as much as digits as its factorization.

145533317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 32.

The square root of 145533317 is about 12063.7190368476. The cubic root of 145533317 is about 526.0020975112.

Adding to 145533317 its reverse (713335541), we get a palindrome (858868858).

The spelling of 145533317 in words is "one hundred forty-five million, five hundred thirty-three thousand, three hundred seventeen".