2155005532 has 6 divisors (see below), whose sum is σ = 3771259688. Its totient is φ = 1077502764.

The previous prime is 2155005521. The next prime is 2155005533. The reversal of 2155005532 is 2355005512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155005532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155005533) by changing a digit.

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 as a sum of consecutive naturals, namely, 269375688 + ... + 269375695.

Almost surely, 2^2155005532 is an apocalyptic number.

It is an amenable number.

2155005532 is a deficient number, since it is larger than the sum of its proper divisors (1616254156).

2155005532 is a wasteful number, since it uses less digits than its factorization.

2155005532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538751387 (or 538751385 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 2155005532 is about 46422.0371375492. The cubic root of 2155005532 is about 1291.6637251981.

The spelling of 2155005532 in words is "two billion, one hundred fifty-five million, five thousand, five hundred thirty-two".