100545 has 8 divisors (see below), whose sum is σ = 160896. Its totient is φ = 53616.

The previous prime is 100537. The next prime is 100547. The reversal of 100545 is 545001.

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

It is not a de Polignac number, because 100545 - 2³ = 100537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 6703 = 100545 / (1 + 0 + 0 + 5 + 4 + 5).

It is not an unprimeable number, because it can be changed into a prime (100547) 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, 3337 + ... + 3366.

It is an arithmetic number, because the mean of its divisors is an integer number (20112).

2¹⁰⁰⁵⁴⁵ is an apocalyptic number.

100545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100545 is a deficient number, since it is larger than the sum of its proper divisors (60351).

100545 is an equidigital number, since it uses as much as digits as its factorization.

100545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 100545 is about 317.0883157734. The cubic root of 100545 is about 46.5000578101.

Adding to 100545 its reverse (545001), we get a palindrome (645546).

The spelling of 100545 in words is "one hundred thousand, five hundred forty-five".