2220481 has 4 divisors (see below), whose sum is σ = 2280532. Its totient is φ = 2160432.

The previous prime is 2220479. The next prime is 2220497. The reversal of 2220481 is 1840222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 370881 = 1360^2 + 609^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220481 - 2¹ = 2220479 is a prime.

It is a super-2 number, since 2×2220481² = 9861071742722, which contains 22 as substring.

2220481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2220431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29970 + ... + 30043.

It is an arithmetic number, because the mean of its divisors is an integer number (570133).

2^2220481 is an apocalyptic number.

It is an amenable number.

2220481 is a deficient number, since it is larger than the sum of its proper divisors (60051).

2220481 is an equidigital number, since it uses as much as digits as its factorization.

2220481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60050.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2220481 is about 1490.1278468642. The cubic root of 2220481 is about 130.4614958604.

It can be divided in two parts, 2220 and 481, that added together give a triangular number (2701 = T₇₃).

The spelling of 2220481 in words is "two million, two hundred twenty thousand, four hundred eighty-one".