106571521 has 24 divisors (see below), whose sum is σ = 135530496. Its totient is φ = 83180160.

The previous prime is 106571471. The next prime is 106571527. The reversal of 106571521 is 125175601.

It is not a de Polignac number, because 106571521 - 2⁹ = 106571009 is a prime.

It is a super-2 number, since 2×106571521² = 22714978176506882, which contains 22 as substring.

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 106571521.

It is not an unprimeable number, because it can be changed into a prime (106571527) 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 23 ways as a sum of consecutive naturals, for example, 23760 + ... + 27886.

It is an arithmetic number, because the mean of its divisors is an integer number (5647104).

Almost surely, 2^106571521 is an apocalyptic number.

It is an amenable number.

106571521 is a deficient number, since it is larger than the sum of its proper divisors (28958975).

106571521 is a wasteful number, since it uses less digits than its factorization.

106571521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189 (or 4182 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 106571521 is about 10323.3483424711. The cubic root of 106571521 is about 474.1113890745. Note that the first 3 decimals are identical.

The spelling of 106571521 in words is "one hundred six million, five hundred seventy-one thousand, five hundred twenty-one".