2509770221 has 8 divisors (see below), whose sum is σ = 2870946624. Its totient is φ = 2149253280.

The previous prime is 2509770217. The next prime is 2509770223. The reversal of 2509770221 is 1220779052.

2509770221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2509770221 - 2² = 2509770217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509770223) 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, 156680 + ... + 171953.

It is an arithmetic number, because the mean of its divisors is an integer number (358868328).

Almost surely, 2^2509770221 is an apocalyptic number.

It is an amenable number.

2509770221 is a deficient number, since it is larger than the sum of its proper divisors (361176403).

2509770221 is a wasteful number, since it uses less digits than its factorization.

2509770221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329731.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 2509770221 is about 50097.6069388549. The cubic root of 2509770221 is about 1358.9745407451.

The spelling of 2509770221 in words is "two billion, five hundred nine million, seven hundred seventy thousand, two hundred twenty-one".