145499 has 4 divisors (see below), whose sum is σ = 147336. Its totient is φ = 143664.

The previous prime is 145487. The next prime is 145501. The reversal of 145499 is 994541.

145499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994541 = 97 ⋅10253.

It is a cyclic number.

It is not a de Polignac number, because 145499 - 2¹² = 141403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145459) 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, 794 + ... + 959.

It is an arithmetic number, because the mean of its divisors is an integer number (36834).

2¹⁴⁵⁴⁹⁹ is an apocalyptic number.

145499 is a deficient number, since it is larger than the sum of its proper divisors (1837).

145499 is an equidigital number, since it uses as much as digits as its factorization.

145499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836.

The product of its digits is 6480, while the sum is 32.

The square root of 145499 is about 381.4433116467. The cubic root of 145499 is about 52.5960750202.

The spelling of 145499 in words is "one hundred forty-five thousand, four hundred ninety-nine".