100502161 has 4 divisors (see below), whose sum is σ = 100530612. Its totient is φ = 100473712.

The previous prime is 100502159. The next prime is 100502167. The reversal of 100502161 is 161205001.

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 71503936 + 28998225 = 8456^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 100502161 - 2¹ = 100502159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100502167) 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, 8026 + ... + 16291.

It is an arithmetic number, because the mean of its divisors is an integer number (25132653).

Almost surely, 2^100502161 is an apocalyptic number.

It is an amenable number.

100502161 is a deficient number, since it is larger than the sum of its proper divisors (28451).

100502161 is an equidigital number, since it uses as much as digits as its factorization.

100502161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28450.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 100502161 is about 10025.0766081861. The cubic root of 100502161 is about 464.9345281081.

Adding to 100502161 its reverse (161205001), we get a palindrome (261707162).

The spelling of 100502161 in words is "one hundred million, five hundred two thousand, one hundred sixty-one".