2155234252 has 12 divisors (see below), whose sum is σ = 3824782416. Its totient is φ = 1062439280.

The previous prime is 2155234243. The next prime is 2155234271. The reversal of 2155234252 is 2524325512.

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 3 ways as a sum of consecutive naturals, for example, 3794143 + ... + 3794710.

It is an arithmetic number, because the mean of its divisors is an integer number (318731868).

Almost surely, 2^2155234252 is an apocalyptic number.

It is an amenable number.

2155234252 is a deficient number, since it is larger than the sum of its proper divisors (1669548164).

2155234252 is a wasteful number, since it uses less digits than its factorization.

2155234252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7588928 (or 7588926 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 2155234252 is about 46424.5005573566. The cubic root of 2155234252 is about 1291.7094201892.

Adding to 2155234252 its reverse (2524325512), we get a palindrome (4679559764).

The spelling of 2155234252 in words is "two billion, one hundred fifty-five million, two hundred thirty-four thousand, two hundred fifty-two".