145105199 has 2 divisors, whose sum is σ = 145105200. Its totient is φ = 145105198.

The previous prime is 145105189. The next prime is 145105243. The reversal of 145105199 is 991501541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145105199 - 2⁸ = 145104943 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 (145105189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72552599 + 72552600.

It is an arithmetic number, because the mean of its divisors is an integer number (72552600).

Almost surely, 2^145105199 is an apocalyptic number.

145105199 is a deficient number, since it is larger than the sum of its proper divisors (1).

145105199 is an equidigital number, since it uses as much as digits as its factorization.

145105199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 35.

The square root of 145105199 is about 12045.9619375125. The cubic root of 145105199 is about 525.4858076143.

The spelling of 145105199 in words is "one hundred forty-five million, one hundred five thousand, one hundred ninety-nine".