2875221520 has 40 divisors (see below), whose sum is σ = 6688708056. Its totient is φ = 1149431808.

The previous prime is 2875221469. The next prime is 2875221521. The reversal of 2875221520 is 251225782.

It can be written as a sum of positive squares in 4 ways, for example, as 555450624 + 2319770896 = 23568^2 + 48164^2 .

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

It is a super-2 number, since 2×2875221520² = 16533797578142220800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2875221521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145344 + ... + 163936.

Almost surely, 2^2875221520 is an apocalyptic number.

2875221520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2875221520 is an abundant number, since it is smaller than the sum of its proper divisors (3813486536).

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

2875221520 is a wasteful number, since it uses less digits than its factorization.

2875221520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20539 (or 20533 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 2875221520 is about 53621.0921186803. The cubic root of 2875221520 is about 1421.9700091857.

The spelling of 2875221520 in words is "two billion, eight hundred seventy-five million, two hundred twenty-one thousand, five hundred twenty".