2155205252 has 12 divisors (see below), whose sum is σ = 3774039360. Its totient is φ = 1076908296.

The previous prime is 2155205251. The next prime is 2155205263. The reversal of 2155205252 is 2525025512.

It is not an unprimeable number, because it can be changed into a prime (2155205251) 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, 166568 + ... + 179039.

It is an arithmetic number, because the mean of its divisors is an integer number (314503280).

Almost surely, 2^2155205252 is an apocalyptic number.

It is an amenable number.

2155205252 is a deficient number, since it is larger than the sum of its proper divisors (1618834108).

2155205252 is a wasteful number, since it uses less digits than its factorization.

2155205252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347170 (or 347168 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 2155205252 is about 46424.1882212280. The cubic root of 2155205252 is about 1291.7036265821.

The spelling of 2155205252 in words is "two billion, one hundred fifty-five million, two hundred five thousand, two hundred fifty-two".