101530225 has 12 divisors (see below), whose sum is σ = 127624396. Its totient is φ = 80110080.

The previous prime is 101530223. The next prime is 101530229. The reversal of 101530225 is 522035101.

It can be written as a sum of positive squares in 6 ways, for example, as 10975969 + 90554256 = 3313^2 + 9516^2 .

It is not a de Polignac number, because 101530225 - 2¹ = 101530223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101530223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25992 + ... + 29641.

Almost surely, 2^101530225 is an apocalyptic number.

It is an amenable number.

101530225 is a deficient number, since it is larger than the sum of its proper divisors (26094171).

101530225 is an equidigital number, since it uses as much as digits as its factorization.

101530225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55716 (or 55711 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 101530225 is about 10076.2207697132. The cubic root of 101530225 is about 466.5144670901.

Adding to 101530225 its reverse (522035101), we get a palindrome (623565326).

The spelling of 101530225 in words is "one hundred one million, five hundred thirty thousand, two hundred twenty-five".