145602089 has 2 divisors, whose sum is σ = 145602090. Its totient is φ = 145602088.

The previous prime is 145602053. The next prime is 145602103. The reversal of 145602089 is 980206541.

145602089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128029225 + 17572864 = 11315^2 + 4192^2 .

It is an emirp because it is prime and its reverse (980206541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145602089 is a prime.

It is not a weakly prime, because it can be changed into another prime (145602019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72801044 + 72801045.

It is an arithmetic number, because the mean of its divisors is an integer number (72801045).

Almost surely, 2^145602089 is an apocalyptic number.

It is an amenable number.

145602089 is a deficient number, since it is larger than the sum of its proper divisors (1).

145602089 is an equidigital number, since it uses as much as digits as its factorization.

145602089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 145602089 is about 12066.5690649828. The cubic root of 145602089 is about 526.0849388391.

The spelling of 145602089 in words is "one hundred forty-five million, six hundred two thousand, eighty-nine".