2157325520 has 40 divisors (see below), whose sum is σ = 5732323584. Its totient is φ = 739654272.

The previous prime is 2157325477. The next prime is 2157325543. The reversal of 2157325520 is 255237512.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1925624 + ... + 1926743.

Almost surely, 2^2157325520 is an apocalyptic number.

2157325520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157325520 is an abundant number, since it is smaller than the sum of its proper divisors (3574998064).

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

2157325520 is a wasteful number, since it uses less digits than its factorization.

2157325520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852387 (or 3852381 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 2157325520 is about 46447.0184188393. The cubic root of 2157325520 is about 1292.1270758465.

The spelling of 2157325520 in words is "two billion, one hundred fifty-seven million, three hundred twenty-five thousand, five hundred twenty".