105552521 has 8 divisors (see below), whose sum is σ = 108117504. Its totient is φ = 103008880.

The previous prime is 105552493. The next prime is 105552523. The reversal of 105552521 is 125255501.

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

It is a cyclic number.

It is not a de Polignac number, because 105552521 - 2¹⁸ = 105290377 is a prime.

It is a super-2 number, since 2×105552521² = 22282669378910882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105552523) 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, 4910 + ... + 15336.

It is an arithmetic number, because the mean of its divisors is an integer number (13514688).

Almost surely, 2^105552521 is an apocalyptic number.

It is an amenable number.

105552521 is a deficient number, since it is larger than the sum of its proper divisors (2564983).

105552521 is a wasteful number, since it uses less digits than its factorization.

105552521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 105552521 is about 10273.8756562458. The cubic root of 105552521 is about 472.5954507948.

The spelling of 105552521 in words is "one hundred five million, five hundred fifty-two thousand, five hundred twenty-one".