21524053441 has 8 divisors (see below), whose sum is σ = 23516751744. Its totient is φ = 19537349520.

The previous prime is 21524053429. The next prime is 21524053457. The reversal of 21524053441 is 14435042512.

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 21524053441 - 2²¹ = 21521956289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21524054441) 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 7 ways as a sum of consecutive naturals, for example, 1491081 + ... + 1505446.

It is an arithmetic number, because the mean of its divisors is an integer number (2939593968).

Almost surely, 2^21524053441 is an apocalyptic number.

It is an amenable number.

21524053441 is a deficient number, since it is larger than the sum of its proper divisors (1992698303).

21524053441 is a wasteful number, since it uses less digits than its factorization.

21524053441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997191.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 21524053441 its reverse (14435042512), we get a palindrome (35959095953).

The spelling of 21524053441 in words is "twenty-one billion, five hundred twenty-four million, fifty-three thousand, four hundred forty-one".