101530145 has 8 divisors (see below), whose sum is σ = 124808040. Its totient is φ = 79242880.

The previous prime is 101530141. The next prime is 101530147. The reversal of 101530145 is 541035101.

It can be written as a sum of positive squares in 4 ways, for example, as 8059921 + 93470224 = 2839^2 + 9668^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101530145 - 2² = 101530141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101530141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247430 + ... + 247839.

It is an arithmetic number, because the mean of its divisors is an integer number (15601005).

Almost surely, 2^101530145 is an apocalyptic number.

It is an amenable number.

101530145 is a deficient number, since it is larger than the sum of its proper divisors (23277895).

101530145 is an equidigital number, since it uses as much as digits as its factorization.

101530145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495315.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 101530145 is about 10076.2167999701. The cubic root of 101530145 is about 466.5143445612.

Adding to 101530145 its reverse (541035101), we get a palindrome (642565246).

The spelling of 101530145 in words is "one hundred one million, five hundred thirty thousand, one hundred forty-five".