100166545 has 4 divisors (see below), whose sum is σ = 120199860. Its totient is φ = 80133232.

The previous prime is 100166543. The next prime is 100166557. The reversal of 100166545 is 545661001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15673681 + 84492864 = 3959^2 + 9192^2 .

It is a cyclic number.

It is not a de Polignac number, because 100166545 - 2¹ = 100166543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100166543) 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, 10016650 + ... + 10016659.

It is an arithmetic number, because the mean of its divisors is an integer number (30049965).

Almost surely, 2^100166545 is an apocalyptic number.

It is an amenable number.

100166545 is a deficient number, since it is larger than the sum of its proper divisors (20033315).

100166545 is an equidigital number, since it uses as much as digits as its factorization.

100166545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20033314.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 100166545 is about 10008.3237857296. The cubic root of 100166545 is about 464.4164182478.

It can be divided in two parts, 10016 and 6545, that added together give a palindrome (16561).

The spelling of 100166545 in words is "one hundred million, one hundred sixty-six thousand, five hundred forty-five".