100530715 has 4 divisors (see below), whose sum is σ = 120636864. Its totient is φ = 80424568.

The previous prime is 100530713. The next prime is 100530743. The reversal of 100530715 is 517035001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517035001 = 7 ⋅73862143.

It is a cyclic number.

It is not a de Polignac number, because 100530715 - 2¹ = 100530713 is a prime.

It is a super-2 number, since 2×100530715² = 20212849316822450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100530713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10053067 + ... + 10053076.

It is an arithmetic number, because the mean of its divisors is an integer number (30159216).

Almost surely, 2^100530715 is an apocalyptic number.

100530715 is a deficient number, since it is larger than the sum of its proper divisors (20106149).

100530715 is an equidigital number, since it uses as much as digits as its factorization.

100530715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20106148.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 100530715 is about 10026.5006358151. The cubic root of 100530715 is about 464.9785552989.

Adding to 100530715 its reverse (517035001), we get a palindrome (617565716).

The spelling of 100530715 in words is "one hundred million, five hundred thirty thousand, seven hundred fifteen".