105521512 has 8 divisors (see below), whose sum is σ = 197852850. Its totient is φ = 52760752.

The previous prime is 105521503. The next prime is 105521513. The reversal of 105521512 is 215125501.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105144516 + 376996 = 10254^2 + 614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×105521512² = 22269578989532288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105521513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6595087 + ... + 6595102.

Almost surely, 2^105521512 is an apocalyptic number.

It is an amenable number.

105521512 is a deficient number, since it is larger than the sum of its proper divisors (92331338).

105521512 is a wasteful number, since it uses less digits than its factorization.

105521512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13190195 (or 13190191 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 105521512 is about 10272.3664264862. The cubic root of 105521512 is about 472.5491668927.

The spelling of 105521512 in words is "one hundred five million, five hundred twenty-one thousand, five hundred twelve".