2155658652 has 72 divisors (see below), whose sum is σ = 6235852896. Its totient is φ = 615072384.

The previous prime is 2155658627. The next prime is 2155658657. The reversal of 2155658652 is 2568565512.

2155658652 is a `hidden beast` number, since 2 + 1 + 5 + 565 + 86 + 5 + 2 = 666.

2155658652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2155658598 and 2155658607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155658657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195478 + ... + 206210.

It is an arithmetic number, because the mean of its divisors is an integer number (86609068).

Almost surely, 2^2155658652 is an apocalyptic number.

It is an amenable number.

2155658652 is an abundant number, since it is smaller than the sum of its proper divisors (4080194244).

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

2155658652 is a wasteful number, since it uses less digits than its factorization.

2155658652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11547 (or 11542 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 2155658652 is about 46429.0711946728. The cubic root of 2155658652 is about 1291.7942006871.

It can be divided in two parts, 21556 and 58652, that added together give a palindrome (80208).

The spelling of 2155658652 in words is "two billion, one hundred fifty-five million, six hundred fifty-eight thousand, six hundred fifty-two".