2155253124 has 12 divisors (see below), whose sum is σ = 5028923984. Its totient is φ = 718417704.

The previous prime is 2155253123. The next prime is 2155253137. The reversal of 2155253124 is 4213525512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2155253091 and 2155253100.

It is not an unprimeable number, because it can be changed into a prime (2155253123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89802202 + ... + 89802225.

Almost surely, 2^2155253124 is an apocalyptic number.

It is an amenable number.

2155253124 is an abundant number, since it is smaller than the sum of its proper divisors (2873670860).

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

2155253124 is a wasteful number, since it uses less digits than its factorization.

2155253124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179604434 (or 179604432 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 2155253124 is about 46424.7038116561. The cubic root of 2155253124 is about 1291.7131904010.

Adding to 2155253124 its reverse (4213525512), we get a palindrome (6368778636).

The spelling of 2155253124 in words is "two billion, one hundred fifty-five million, two hundred fifty-three thousand, one hundred twenty-four".