145502297 has 2 divisors, whose sum is σ = 145502298. Its totient is φ = 145502296.

The previous prime is 145502243. The next prime is 145502299. The reversal of 145502297 is 792205541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87909376 + 57592921 = 9376^2 + 7589^2 .

It is an emirp because it is prime and its reverse (792205541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145502297 - 2¹⁴ = 145485913 is a prime.

Together with 145502299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145502299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72751148 + 72751149.

It is an arithmetic number, because the mean of its divisors is an integer number (72751149).

Almost surely, 2^145502297 is an apocalyptic number.

It is an amenable number.

145502297 is a deficient number, since it is larger than the sum of its proper divisors (1).

145502297 is an equidigital number, since it uses as much as digits as its factorization.

145502297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 145502297 is about 12062.4332951524. The cubic root of 145502297 is about 525.9647229205.

The spelling of 145502297 in words is "one hundred forty-five million, five hundred two thousand, two hundred ninety-seven".