145345199 has 4 divisors (see below), whose sum is σ = 145673736. Its totient is φ = 145016664.

The previous prime is 145345183. The next prime is 145345217. The reversal of 145345199 is 991543541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145345199 - 2⁴ = 145345183 is a prime.

It is a super-2 number, since 2×145345199² = 42250453744699202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145345169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163604 + ... + 164489.

It is an arithmetic number, because the mean of its divisors is an integer number (36418434).

Almost surely, 2^145345199 is an apocalyptic number.

145345199 is a deficient number, since it is larger than the sum of its proper divisors (328537).

145345199 is an equidigital number, since it uses as much as digits as its factorization.

145345199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328536.

The product of its digits is 97200, while the sum is 41.

The square root of 145345199 is about 12055.9196662884. The cubic root of 145345199 is about 525.7753610496.

The spelling of 145345199 in words is "one hundred forty-five million, three hundred forty-five thousand, one hundred ninety-nine".