145530137 has 2 divisors, whose sum is σ = 145530138. Its totient is φ = 145530136.

The previous prime is 145530113. The next prime is 145530157. The reversal of 145530137 is 731035541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75707401 + 69822736 = 8701^2 + 8356^2 .

It is an emirp because it is prime and its reverse (731035541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145530137 - 2¹⁶ = 145464601 is a prime.

It is equal to p_8206733 and since 145530137 and 8206733 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (145530107) 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, 72765068 + 72765069.

It is an arithmetic number, because the mean of its divisors is an integer number (72765069).

Almost surely, 2^145530137 is an apocalyptic number.

It is an amenable number.

145530137 is a deficient number, since it is larger than the sum of its proper divisors (1).

145530137 is an equidigital number, since it uses as much as digits as its factorization.

145530137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 145530137 is about 12063.5872359759. The cubic root of 145530137 is about 525.9982663178.

Adding to 145530137 its reverse (731035541), we get a palindrome (876565678).

The spelling of 145530137 in words is "one hundred forty-five million, five hundred thirty thousand, one hundred thirty-seven".