2201543440 has 40 divisors (see below), whose sum is σ = 5341140288. Its totient is φ = 842328960.

The previous prime is 2201543437. The next prime is 2201543441. The reversal of 2201543440 is 443451022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2201543441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596406 + ... + 600085.

Almost surely, 2^2201543440 is an apocalyptic number.

2201543440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201543440 is an abundant number, since it is smaller than the sum of its proper divisors (3139596848).

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

2201543440 is a wasteful number, since it uses less digits than its factorization.

2201543440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196527 (or 1196521 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2201543440 is about 46920.6078392000. The cubic root of 2201543440 is about 1300.8955249740.

Adding to 2201543440 its reverse (443451022), we get a palindrome (2644994462).

The spelling of 2201543440 in words is "two billion, two hundred one million, five hundred forty-three thousand, four hundred forty".