2221526 has 16 divisors (see below), whose sum is σ = 3556224. Its totient is φ = 1037184.

The previous prime is 2221523. The next prime is 2221567. The reversal of 2221526 is 6251222.

It is a junction number, because it is equal to n+sod(n) for n = 2221498 and 2221507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221523) 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, 7436 + ... + 7728.

It is an arithmetic number, because the mean of its divisors is an integer number (222264).

2^2221526 is an apocalyptic number.

2221526 is a deficient number, since it is larger than the sum of its proper divisors (1334698).

2221526 is a wasteful number, since it uses less digits than its factorization.

2221526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its digits is 480, while the sum is 20.

The square root of 2221526 is about 1490.4784466741. The cubic root of 2221526 is about 130.4819585262.

Adding to 2221526 its reverse (6251222), we get a palindrome (8472748).

The spelling of 2221526 in words is "two million, two hundred twenty-one thousand, five hundred twenty-six".