21054524000 has 48 divisors (see below), whose sum is σ = 51730975296. Its totient is φ = 8421808000.

The previous prime is 21054523969. The next prime is 21054524041. The reversal of 21054524000 is 42545012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2627816 + ... + 2635815.

It is an arithmetic number, because the mean of its divisors is an integer number (1077728652).

Almost surely, 2^21054524000 is an apocalyptic number.

21054524000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21054524000 is an abundant number, since it is smaller than the sum of its proper divisors (30676451296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21054524000 is an equidigital number, since it uses as much as digits as its factorization.

21054524000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263656 (or 5263638 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The spelling of 21054524000 in words is "twenty-one billion, fifty-four million, five hundred twenty-four thousand".