105050531521 has 48 divisors (see below), whose sum is σ = 118516245120. Its totient is φ = 92527142400.

The previous prime is 105050531507. The next prime is 105050531557. The reversal of 105050531521 is 125135050501.

It is not a de Polignac number, because 105050531521 - 2⁹ = 105050531009 is a prime.

It is a super-2 number, since 2×105050531521² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105050531521.

It is not an unprimeable number, because it can be changed into a prime (105050531581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 250717050 + ... + 250717468.

It is an arithmetic number, because the mean of its divisors is an integer number (2469088440).

Almost surely, 2^105050531521 is an apocalyptic number.

It is an amenable number.

105050531521 is a deficient number, since it is larger than the sum of its proper divisors (13465713599).

105050531521 is an equidigital number, since it uses as much as digits as its factorization.

105050531521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 105050531521 in words is "one hundred five billion, fifty million, five hundred thirty-one thousand, five hundred twenty-one".