21524552522 has 16 divisors (see below), whose sum is σ = 35224304544. Its totient is φ = 9783246000.

The previous prime is 21524552513. The next prime is 21524552561. The reversal of 21524552522 is 22525542512.

It is a super-2 number, since 2×21524552522² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529772 + ... + 568952.

It is an arithmetic number, because the mean of its divisors is an integer number (2201519034).

Almost surely, 2^21524552522 is an apocalyptic number.

21524552522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21524552522 is a deficient number, since it is larger than the sum of its proper divisors (13699752022).

21524552522 is a wasteful number, since it uses less digits than its factorization.

21524552522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64165.

The product of its digits is 80000, while the sum is 35.

The spelling of 21524552522 in words is "twenty-one billion, five hundred twenty-four million, five hundred fifty-two thousand, five hundred twenty-two".