2155244002 has 16 divisors (see below), whose sum is σ = 3245319000. Its totient is φ = 1073479680.

The previous prime is 2155243973. The next prime is 2155244017. The reversal of 2155244002 is 2004425512.

It can be written as a sum of positive squares in 4 ways, for example, as 1107491841 + 1047752161 = 33279^2 + 32369^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689002 + ... + 692122.

Almost surely, 2^2155244002 is an apocalyptic number.

2155244002 is a deficient number, since it is larger than the sum of its proper divisors (1090074998).

2155244002 is a wasteful number, since it uses less digits than its factorization.

2155244002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2155244002 is about 46424.6055664450. The cubic root of 2155244002 is about 1291.7113680282.

Adding to 2155244002 its reverse (2004425512), we get a palindrome (4159669514).

The spelling of 2155244002 in words is "two billion, one hundred fifty-five million, two hundred forty-four thousand, two".