2520288321 has 8 divisors (see below), whose sum is σ = 3367581984.
Its totient is φ = 1676593440.
The previous prime is 2520288311. The next prime is 2520288343. The reversal of 2520288321 is 1238820252.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2520288321 - 215 = 2520255553 is a prime.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (2520288311) 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, 898060 + ... + 900861.
It is an arithmetic number, because the mean of its divisors is an integer number (420947748).
Almost surely, 22520288321 is an apocalyptic number.
It is an amenable number.
2520288321 is a deficient number, since it is larger than the sum of its proper divisors (847293663).
2520288321 is a wasteful number, since it uses less digits than its factorization.
2520288321 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1799391.
The product of its (nonzero) digits is 15360, while the sum is 33.
The square root of 2520288321 is about 50202.4732558068.
The cubic root of 2520288321 is about 1360.8703196941.
The spelling of 2520288321 in words is "two billion, five hundred twenty million, two hundred eighty-eight thousand, three hundred twenty-one".