1521226 has 16 divisors (see below), whose sum is σ = 2625984. Its totient is φ = 647424.

The previous prime is 1521217. The next prime is 1521227. The reversal of 1521226 is 6221251.

It is not an unprimeable number, because it can be changed into a prime (1521227) 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 7 ways as a sum of consecutive naturals, for example, 2421 + ... + 2983.

It is an arithmetic number, because the mean of its divisors is an integer number (164124).

2^1521226 is an apocalyptic number.

1521226 is a deficient number, since it is larger than the sum of its proper divisors (1104758).

1521226 is a wasteful number, since it uses less digits than its factorization.

1521226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its digits is 240, while the sum is 19.

The square root of 1521226 is about 1233.3799090305. The cubic root of 1521226 is about 115.0088462004.

Adding to 1521226 its reverse (6221251), we get a palindrome (7742477).

It can be divided in two parts, 152 and 1226, that added together give a triangular number (1378 = T₅₂).

The spelling of 1521226 in words is "one million, five hundred twenty-one thousand, two hundred twenty-six".