145515 has 16 divisors (see below), whose sum is σ = 237600. Its totient is φ = 76032.

The previous prime is 145513. The next prime is 145517. The reversal of 145515 is 515541.

145515 is nontrivially palindromic in base 6.

145515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145513) and next prime (145517).

It is not a de Polignac number, because 145515 - 2¹ = 145513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145491 and 145500.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145515.

It is not an unprimeable number, because it can be changed into a prime (145511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281 + ... + 1389.

It is an arithmetic number, because the mean of its divisors is an integer number (14850).

2¹⁴⁵⁵¹⁵ is an apocalyptic number.

145515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145515 is a deficient number, since it is larger than the sum of its proper divisors (92085).

145515 is a wasteful number, since it uses less digits than its factorization.

145515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its digits is 500, while the sum is 21.

The square root of 145515 is about 381.4642840424. The cubic root of 145515 is about 52.5980028831.

The spelling of 145515 in words is "one hundred forty-five thousand, five hundred fifteen".