2102533155 has 48 divisors (see below), whose sum is σ = 3837936960. Its totient is φ = 1062699264.

The previous prime is 2102533151. The next prime is 2102533171. The reversal of 2102533155 is 5513352012.

It is a happy number.

It is not a de Polignac number, because 2102533155 - 2² = 2102533151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102533151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103497 + ... + 122133.

It is an arithmetic number, because the mean of its divisors is an integer number (79957020).

Almost surely, 2^2102533155 is an apocalyptic number.

2102533155 is a deficient number, since it is larger than the sum of its proper divisors (1735403805).

2102533155 is a wasteful number, since it uses less digits than its factorization.

2102533155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18780 (or 18777 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 2102533155 is about 45853.3876065880. The cubic root of 2102533155 is about 1281.0938637260.

Adding to 2102533155 its reverse (5513352012), we get a palindrome (7615885167).

The spelling of 2102533155 in words is "two billion, one hundred two million, five hundred thirty-three thousand, one hundred fifty-five".