101530081 has 4 divisors (see below), whose sum is σ = 101708464. Its totient is φ = 101351700.

The previous prime is 101530021. The next prime is 101530133. The reversal of 101530081 is 180035101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101530081 - 2¹¹ = 101528033 is a prime.

It is a super-2 number, since 2×101530081² = 20616714695733122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101530021) 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 3 ways as a sum of consecutive naturals, for example, 88335 + ... + 89476.

It is an arithmetic number, because the mean of its divisors is an integer number (25427116).

Almost surely, 2^101530081 is an apocalyptic number.

It is an amenable number.

101530081 is a deficient number, since it is larger than the sum of its proper divisors (178383).

101530081 is an equidigital number, since it uses as much as digits as its factorization.

101530081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178382.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 101530081 is about 10076.2136241745. The cubic root of 101530081 is about 466.5142465380.

Adding to 101530081 its reverse (180035101), we get a palindrome (281565182).

The spelling of 101530081 in words is "one hundred one million, five hundred thirty thousand, eighty-one".