145815 has 8 divisors (see below), whose sum is σ = 233328. Its totient is φ = 77760.

The previous prime is 145807. The next prime is 145819. The reversal of 145815 is 518541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145815 - 2³ = 145807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4846 + ... + 4875.

It is an arithmetic number, because the mean of its divisors is an integer number (29166).

2¹⁴⁵⁸¹⁵ is an apocalyptic number.

145815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145815 is a deficient number, since it is larger than the sum of its proper divisors (87513).

145815 is an equidigital number, since it uses as much as digits as its factorization.

145815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9729.

The product of its digits is 800, while the sum is 24.

The square root of 145815 is about 381.8573031906. The cubic root of 145815 is about 52.6341241752.

The spelling of 145815 in words is "one hundred forty-five thousand, eight hundred fifteen".