145548199 has 2 divisors, whose sum is σ = 145548200. Its totient is φ = 145548198.

The previous prime is 145548191. The next prime is 145548241. The reversal of 145548199 is 991845541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145548199 - 2³ = 145548191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145548191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72774099 + 72774100.

It is an arithmetic number, because the mean of its divisors is an integer number (72774100).

Almost surely, 2^145548199 is an apocalyptic number.

145548199 is a deficient number, since it is larger than the sum of its proper divisors (1).

145548199 is an equidigital number, since it uses as much as digits as its factorization.

145548199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 46.

The square root of 145548199 is about 12064.3358292117. The cubic root of 145548199 is about 526.0200262728.

The spelling of 145548199 in words is "one hundred forty-five million, five hundred forty-eight thousand, one hundred ninety-nine".