101532081 has 8 divisors (see below), whose sum is σ = 154715584. Its totient is φ = 58018320.

The previous prime is 101532077. The next prime is 101532091. The reversal of 101532081 is 180235101.

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

It is not a de Polignac number, because 101532081 - 2² = 101532077 is a prime.

It is a super-2 number, since 2×101532081² = 20617526944381122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 4834861 = 101532081 / (1 + 0 + 1 + 5 + 3 + 2 + 0 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101532061) 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, 2417410 + ... + 2417451.

It is an arithmetic number, because the mean of its divisors is an integer number (19339448).

Almost surely, 2^101532081 is an apocalyptic number.

It is an amenable number.

101532081 is a deficient number, since it is larger than the sum of its proper divisors (53183503).

101532081 is an equidigital number, since it uses as much as digits as its factorization.

101532081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834871.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 101532081 is about 10076.3128673141. The cubic root of 101532081 is about 466.5173097430.

Adding to 101532081 its reverse (180235101), we get a palindrome (281767182).

The spelling of 101532081 in words is "one hundred one million, five hundred thirty-two thousand, eighty-one".