145545 has 16 divisors (see below), whose sum is σ = 241152. Its totient is φ = 74880.

The previous prime is 145543. The next prime is 145547. The reversal of 145545 is 545541.

It is an interprime number because it is at equal distance from previous prime (145543) and next prime (145547).

It is not a de Polignac number, because 145545 - 2¹ = 145543 is a prime.

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145545.

It is not an unprimeable number, because it can be changed into a prime (145543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309 + ... + 621.

It is an arithmetic number, because the mean of its divisors is an integer number (15072).

2¹⁴⁵⁵⁴⁵ is an apocalyptic number.

145545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145545 is a deficient number, since it is larger than the sum of its proper divisors (95607).

145545 is a wasteful number, since it uses less digits than its factorization.

145545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its digits is 2000, while the sum is 24.

The square root of 145545 is about 381.5036041769. The cubic root of 145545 is about 52.6016172451.

The spelling of 145545 in words is "one hundred forty-five thousand, five hundred forty-five".