2155504152 has 64 divisors (see below), whose sum is σ = 5698344960. Its totient is φ = 678355200.

The previous prime is 2155504097. The next prime is 2155504157. The reversal of 2155504152 is 2514055512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155504157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4828 + ... + 65835.

It is an arithmetic number, because the mean of its divisors is an integer number (89036640).

Almost surely, 2^2155504152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155504152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2849172480).

2155504152 is an abundant number, since it is smaller than the sum of its proper divisors (3542840808).

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

2155504152 is a wasteful number, since it uses less digits than its factorization.

2155504152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70744 (or 70740 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2155504152 is about 46427.4073366153. The cubic root of 2155504152 is about 1291.7633381984.

Adding to 2155504152 its reverse (2514055512), we get a palindrome (4669559664).

The spelling of 2155504152 in words is "two billion, one hundred fifty-five million, five hundred four thousand, one hundred fifty-two".