145594997 has 2 divisors, whose sum is σ = 145594998. Its totient is φ = 145594996.

The previous prime is 145594979. The next prime is 145595029. The reversal of 145594997 is 799495541.

Together with previous prime (145594979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77598481 + 67996516 = 8809^2 + 8246^2 .

It is a cyclic number.

It is not a de Polignac number, because 145594997 - 2²⁴ = 128817781 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145594927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72797498 + 72797499.

It is an arithmetic number, because the mean of its divisors is an integer number (72797499).

Almost surely, 2^145594997 is an apocalyptic number.

It is an amenable number.

145594997 is a deficient number, since it is larger than the sum of its proper divisors (1).

145594997 is an equidigital number, since it uses as much as digits as its factorization.

145594997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 53.

The square root of 145594997 is about 12066.2751916240. The cubic root of 145594997 is about 526.0763971691.

The spelling of 145594997 in words is "one hundred forty-five million, five hundred ninety-four thousand, nine hundred ninety-seven".