145557199 has 2 divisors, whose sum is σ = 145557200. Its totient is φ = 145557198.

The previous prime is 145557173. The next prime is 145557227. The reversal of 145557199 is 991755541.

145557199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145557199 - 2²⁵ = 112002767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145557799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72778599 + 72778600.

It is an arithmetic number, because the mean of its divisors is an integer number (72778600).

Almost surely, 2^145557199 is an apocalyptic number.

145557199 is a deficient number, since it is larger than the sum of its proper divisors (1).

145557199 is an equidigital number, since it uses as much as digits as its factorization.

145557199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 46.

The square root of 145557199 is about 12064.7088236725. The cubic root of 145557199 is about 526.0308682314.

The spelling of 145557199 in words is "one hundred forty-five million, five hundred fifty-seven thousand, one hundred ninety-nine".