145253199 has 48 divisors (see below), whose sum is σ = 251082720. Its totient is φ = 73946880.

The previous prime is 145253191. The next prime is 145253203. The reversal of 145253199 is 991352541.

It is not a de Polignac number, because 145253199 - 2³ = 145253191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145253191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54109 + ... + 56729.

It is an arithmetic number, because the mean of its divisors is an integer number (5230890).

Almost surely, 2^145253199 is an apocalyptic number.

145253199 is a deficient number, since it is larger than the sum of its proper divisors (105829521).

145253199 is a wasteful number, since it uses less digits than its factorization.

145253199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680 (or 2673 counting only the distinct ones).

The product of its digits is 48600, while the sum is 39.

The square root of 145253199 is about 12052.1035093464. The cubic root of 145253199 is about 525.6644032675.

The spelling of 145253199 in words is "one hundred forty-five million, two hundred fifty-three thousand, one hundred ninety-nine".