145863249 has 12 divisors (see below), whose sum is σ = 226237104. Its totient is φ = 83350344.

The previous prime is 145863241. The next prime is 145863251. The reversal of 145863249 is 942368541.

It is not a de Polignac number, because 145863249 - 2³ = 145863241 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145863249.

It is not an unprimeable number, because it can be changed into a prime (145863241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 495987 + ... + 496280.

It is an arithmetic number, because the mean of its divisors is an integer number (18853092).

Almost surely, 2^145863249 is an apocalyptic number.

It is an amenable number.

145863249 is a deficient number, since it is larger than the sum of its proper divisors (80373855).

145863249 is an equidigital number, since it uses as much as digits as its factorization.

145863249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992284 (or 992277 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 145863249 is about 12077.3858512511. The cubic root of 145863249 is about 526.3992893645.

The spelling of 145863249 in words is "one hundred forty-five million, eight hundred sixty-three thousand, two hundred forty-nine".