2155543344 has 30 divisors (see below), whose sum is σ = 6032527956. Its totient is φ = 718514400.

The previous prime is 2155543309. The next prime is 2155543391. The reversal of 2155543344 is 4433455512.

2155543344 is a `hidden beast` number, since 21 + 55 + 543 + 3 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2155543299 and 2155543308.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7484382 + ... + 7484669.

Almost surely, 2^2155543344 is an apocalyptic number.

2155543344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2155543344 is an abundant number, since it is smaller than the sum of its proper divisors (3876984612).

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

2155543344 is a wasteful number, since it uses less digits than its factorization.

2155543344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14969065 (or 14969056 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 2155543344 is about 46427.8294129717. The cubic root of 2155543344 is about 1291.7711672225.

Adding to 2155543344 its reverse (4433455512), we get a palindrome (6588998856).

The spelling of 2155543344 in words is "two billion, one hundred fifty-five million, five hundred forty-three thousand, three hundred forty-four".