145322539 has 2 divisors, whose sum is σ = 145322540. Its totient is φ = 145322538.

The previous prime is 145322519. The next prime is 145322561. The reversal of 145322539 is 935223541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145322539 - 2¹³ = 145314347 is a prime.

It is a super-2 number, since 2×145322539² = 42237280682813042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145322519) 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, 72661269 + 72661270.

It is an arithmetic number, because the mean of its divisors is an integer number (72661270).

Almost surely, 2^145322539 is an apocalyptic number.

145322539 is a deficient number, since it is larger than the sum of its proper divisors (1).

145322539 is an equidigital number, since it uses as much as digits as its factorization.

145322539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 145322539 is about 12054.9798423722. The cubic root of 145322539 is about 525.7480360124.

It can be divided in two parts, 14532 and 2539, that added together give a palindrome (17071).

The spelling of 145322539 in words is "one hundred forty-five million, three hundred twenty-two thousand, five hundred thirty-nine".