145528247 has 2 divisors, whose sum is σ = 145528248. Its totient is φ = 145528246.

The previous prime is 145528241. The next prime is 145528307. The reversal of 145528247 is 742825541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145528247 - 2⁴ = 145528231 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 145528247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145528241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72764123 + 72764124.

It is an arithmetic number, because the mean of its divisors is an integer number (72764124).

Almost surely, 2^145528247 is an apocalyptic number.

145528247 is a deficient number, since it is larger than the sum of its proper divisors (1).

145528247 is an equidigital number, since it uses as much as digits as its factorization.

145528247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 38.

The square root of 145528247 is about 12063.5089008132. The cubic root of 145528247 is about 525.9959892613.

The spelling of 145528247 in words is "one hundred forty-five million, five hundred twenty-eight thousand, two hundred forty-seven".