145021259 has 2 divisors, whose sum is σ = 145021260. Its totient is φ = 145021258.

The previous prime is 145021231. The next prime is 145021267. The reversal of 145021259 is 952120541.

It is a strong prime.

It is an emirp because it is prime and its reverse (952120541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145021259 is a prime.

It is not a weakly prime, because it can be changed into another prime (145020259) 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, 72510629 + 72510630.

It is an arithmetic number, because the mean of its divisors is an integer number (72510630).

Almost surely, 2^145021259 is an apocalyptic number.

145021259 is a deficient number, since it is larger than the sum of its proper divisors (1).

145021259 is an equidigital number, since it uses as much as digits as its factorization.

145021259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 145021259 is about 12042.4772783676. The cubic root of 145021259 is about 525.3844609428.

The spelling of 145021259 in words is "one hundred forty-five million, twenty-one thousand, two hundred fifty-nine".