105525221 has 8 divisors (see below), whose sum is σ = 114082080. Its totient is φ = 97268688.

The previous prime is 105525193. The next prime is 105525281. The reversal of 105525221 is 122525501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105525221 is a prime.

It is a super-2 number, since 2×105525221² = 22271144534197682, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105525281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74351 + ... + 75756.

It is an arithmetic number, because the mean of its divisors is an integer number (14260260).

Almost surely, 2^105525221 is an apocalyptic number.

It is an amenable number.

105525221 is a deficient number, since it is larger than the sum of its proper divisors (8556859).

105525221 is a wasteful number, since it uses less digits than its factorization.

105525221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150163.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 105525221 is about 10272.5469577900. The cubic root of 105525221 is about 472.5547034077.

The spelling of 105525221 in words is "one hundred five million, five hundred twenty-five thousand, two hundred twenty-one".