2155565132 has 12 divisors (see below), whose sum is σ = 4311130320. Its totient is φ = 923813616.

The previous prime is 2155565131. The next prime is 2155565161. The reversal of 2155565132 is 2315655512.

2155565132 is an admirable number.

It is a super-2 number, since 2×2155565132² = 9292922076588354848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155565092 and 2155565101.

It is not an unprimeable number, because it can be changed into a prime (2155565131) 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, 38492207 + ... + 38492262.

It is an arithmetic number, because the mean of its divisors is an integer number (359260860).

Almost surely, 2^2155565132 is an apocalyptic number.

It is an amenable number.

2155565132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155565132 is a wasteful number, since it uses less digits than its factorization.

2155565132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76984480 (or 76984478 counting only the distinct ones).

The product of its digits is 45000, while the sum is 35.

The square root of 2155565132 is about 46428.0640561288. The cubic root of 2155565132 is about 1291.7755195691.

The spelling of 2155565132 in words is "two billion, one hundred fifty-five million, five hundred sixty-five thousand, one hundred thirty-two".