2155510464 has 56 divisors (see below), whose sum is σ = 5732769840. Its totient is φ = 714768384.

The previous prime is 2155510459. The next prime is 2155510519. The reversal of 2155510464 is 4640155512.

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 in 7 ways as a sum of consecutive naturals, for example, 7972 + ... + 66140.

It is an arithmetic number, because the mean of its divisors is an integer number (102370890).

Almost surely, 2^2155510464 is an apocalyptic number.

2155510464 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 2155510464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2866384920).

2155510464 is an abundant number, since it is smaller than the sum of its proper divisors (3577259376).

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

2155510464 is a wasteful number, since it uses less digits than its factorization.

2155510464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58377 (or 58367 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 2155510464 is about 46427.4753136545. The cubic root of 2155510464 is about 1291.7645990948.

Adding to 2155510464 its reverse (4640155512), we get a palindrome (6795665976).

The spelling of 2155510464 in words is "two billion, one hundred fifty-five million, five hundred ten thousand, four hundred sixty-four".