2152554660 has 36 divisors (see below), whose sum is σ = 6529416348. Its totient is φ = 574014528.

The previous prime is 2152554647. The next prime is 2152554689. The reversal of 2152554660 is 664552512.

2152554660 is a `hidden beast` number, since 2 + 1 + 52 + 5 + 546 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 599564196 + 1552990464 = 24486^2 + 39408^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5979139 + ... + 5979498.

Almost surely, 2^2152554660 is an apocalyptic number.

2152554660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152554660 is an abundant number, since it is smaller than the sum of its proper divisors (4376861688).

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

2152554660 is a wasteful number, since it uses less digits than its factorization.

2152554660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11958652 (or 11958647 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 2152554660 is about 46395.6319064629. The cubic root of 2152554660 is about 1291.1738728861.

The spelling of 2152554660 in words is "two billion, one hundred fifty-two million, five hundred fifty-four thousand, six hundred sixty".