2155452044 has 6 divisors (see below), whose sum is σ = 3772041084. Its totient is φ = 1077726020.

The previous prime is 2155451939. The next prime is 2155452059. The reversal of 2155452044 is 4402545512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155452044.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269431502 + ... + 269431509.

It is an arithmetic number, because the mean of its divisors is an integer number (628673514).

Almost surely, 2^2155452044 is an apocalyptic number.

It is an amenable number.

2155452044 is a deficient number, since it is larger than the sum of its proper divisors (1616589040).

2155452044 is a wasteful number, since it uses less digits than its factorization.

2155452044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538863015 (or 538863013 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 2155452044 is about 46426.8461560766. The cubic root of 2155452044 is about 1291.7529289172.

Adding to 2155452044 its reverse (4402545512), we get a palindrome (6557997556).

The spelling of 2155452044 in words is "two billion, one hundred fifty-five million, four hundred fifty-two thousand, forty-four".