101061521 has 4 divisors (see below), whose sum is σ = 110248944. Its totient is φ = 91874100.

The previous prime is 101061503. The next prime is 101061529. The reversal of 101061521 is 125160101.

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 101061521 - 2¹⁰ = 101060497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101061521.

It is not an unprimeable number, because it can be changed into a prime (101061529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4593695 + ... + 4593716.

It is an arithmetic number, because the mean of its divisors is an integer number (27562236).

Almost surely, 2^101061521 is an apocalyptic number.

101061521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101061521 is a deficient number, since it is larger than the sum of its proper divisors (9187423).

101061521 is an equidigital number, since it uses as much as digits as its factorization.

101061521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9187422.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 101061521 is about 10052.9359393164. The cubic root of 101061521 is about 465.7954873249.

The spelling of 101061521 in words is "one hundred one million, sixty-one thousand, five hundred twenty-one".