100473217 has 4 divisors (see below), whose sum is σ = 108201940. Its totient is φ = 92744496.

The previous prime is 100473203. The next prime is 100473221. The reversal of 100473217 is 712374001.

It is a happy number.

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 46362481 + 54110736 = 6809^2 + 7356^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100473217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100473191 and 100473200.

It is not an unprimeable number, because it can be changed into a prime (100473017) 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, 3864342 + ... + 3864367.

It is an arithmetic number, because the mean of its divisors is an integer number (27050485).

Almost surely, 2^100473217 is an apocalyptic number.

It is an amenable number.

100473217 is a deficient number, since it is larger than the sum of its proper divisors (7728723).

100473217 is an equidigital number, since it uses as much as digits as its factorization.

100473217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7728722.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 100473217 is about 10023.6329242446. The cubic root of 100473217 is about 464.8898910678.

The spelling of 100473217 in words is "one hundred million, four hundred seventy-three thousand, two hundred seventeen".