2472221 has 8 divisors (see below), whose sum is σ = 2578080. Its totient is φ = 2367792.

The previous prime is 2472209. The next prime is 2472227. The reversal of 2472221 is 1222742.

It is a happy number.

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

It is not a de Polignac number, because 2472221 - 2¹⁸ = 2210077 is a prime.

It is a super-2 number, since 2×2472221² = 12223753345682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2472193 and 2472202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2472227) 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, 4466 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (322260).

2^2472221 is an apocalyptic number.

It is an amenable number.

2472221 is a deficient number, since it is larger than the sum of its proper divisors (105859).

2472221 is a wasteful number, since it uses less digits than its factorization.

2472221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715.

The product of its digits is 448, while the sum is 20.

The square root of 2472221 is about 1572.3298000102. The cubic root of 2472221 is about 135.2163152994.

Adding to 2472221 its reverse (1222742), we get a palindrome (3694963).

The spelling of 2472221 in words is "two million, four hundred seventy-two thousand, two hundred twenty-one".