145200997 has 2 divisors, whose sum is σ = 145200998. Its totient is φ = 145200996.

The previous prime is 145200977. The next prime is 145201027. The reversal of 145200997 is 799002541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140043556 + 5157441 = 11834^2 + 2271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145200997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145200977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72600498 + 72600499.

It is an arithmetic number, because the mean of its divisors is an integer number (72600499).

Almost surely, 2^145200997 is an apocalyptic number.

It is an amenable number.

145200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

145200997 is an equidigital number, since it uses as much as digits as its factorization.

145200997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 145200997 is about 12049.9376346934. The cubic root of 145200997 is about 525.6014235390.

The spelling of 145200997 in words is "one hundred forty-five million, two hundred thousand, nine hundred ninety-seven".