10555201521 has 12 divisors (see below), whose sum is σ = 15366454272. Its totient is φ = 6981392376.

The previous prime is 10555201483. The next prime is 10555201523. The reversal of 10555201521 is 12510255501.

10555201521 is a `hidden beast` number, since 105 + 5 + 520 + 15 + 21 = 666.

It is not a de Polignac number, because 10555201521 - 2¹⁵ = 10555168753 is a prime.

It is a super-2 number, since 2×10555201521² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10555201523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4616181 + ... + 4618466.

It is an arithmetic number, because the mean of its divisors is an integer number (1280537856).

Almost surely, 2^10555201521 is an apocalyptic number.

It is an amenable number.

10555201521 is a deficient number, since it is larger than the sum of its proper divisors (4811252751).

10555201521 is a wasteful number, since it uses less digits than its factorization.

10555201521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9234780 (or 9234777 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The spelling of 10555201521 in words is "ten billion, five hundred fifty-five million, two hundred one thousand, five hundred twenty-one".