2154544080 has 160 divisors (see below), whose sum is σ = 7223537664. Its totient is φ = 528089088.

The previous prime is 2154544057. The next prime is 2154544081. The reversal of 2154544080 is 804454512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154544081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 800497 + ... + 803183.

Almost surely, 2^2154544080 is an apocalyptic number.

2154544080 is a gapful number since it is divisible by the number (20) 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 2154544080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3611768832).

2154544080 is an abundant number, since it is smaller than the sum of its proper divisors (5068993584).

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

2154544080 is a wasteful number, since it uses less digits than its factorization.

2154544080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 2154544080 is about 46417.0666888807. The cubic root of 2154544080 is about 1291.5715238326.

Adding to 2154544080 its reverse (804454512), we get a palindrome (2958998592).

The spelling of 2154544080 in words is "two billion, one hundred fifty-four million, five hundred forty-four thousand, eighty".