2470221 has 24 divisors (see below), whose sum is σ = 3939936. Its totient is φ = 1481760.

The previous prime is 2470217. The next prime is 2470229. The reversal of 2470221 is 1220742.

2470221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2470221 - 2² = 2470217 is a prime.

It is a super-2 number, since 2×2470221² = 12203983577682, which contains 22 as substring.

It is a Curzon number.

2470221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2470194 and 2470203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2470229) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4786 + ... + 5276.

It is an arithmetic number, because the mean of its divisors is an integer number (164164).

2^2470221 is an apocalyptic number.

It is an amenable number.

2470221 is a deficient number, since it is larger than the sum of its proper divisors (1469715).

2470221 is a wasteful number, since it uses less digits than its factorization.

2470221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2470221 is about 1571.6936724438. The cubic root of 2470221 is about 135.1798426176.

Adding to 2470221 its reverse (1220742), we get a palindrome (3690963).

The spelling of 2470221 in words is "two million, four hundred seventy thousand, two hundred twenty-one".