2154212544 has 112 divisors (see below), whose sum is σ = 6293266560. Its totient is φ = 644874240.

The previous prime is 2154212531. The next prime is 2154212551. The reversal of 2154212544 is 4452124512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169152 + ... + 181440.

It is an arithmetic number, because the mean of its divisors is an integer number (56189880).

Almost surely, 2^2154212544 is an apocalyptic number.

2154212544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154212544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3146633280).

2154212544 is an abundant number, since it is smaller than the sum of its proper divisors (4139054016).

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

2154212544 is a wasteful number, since it uses less digits than its factorization.

2154212544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12398 (or 12388 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 2154212544 is about 46413.4952788518. The cubic root of 2154212544 is about 1291.5052724733.

The spelling of 2154212544 in words is "two billion, one hundred fifty-four million, two hundred twelve thousand, five hundred forty-four".