1226513 has 4 divisors (see below), whose sum is σ = 1259700. Its totient is φ = 1193328.

The previous prime is 1226503. The next prime is 1226531. The reversal of 1226513 is 3156221.

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 1181569 + 44944 = 1087^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226513 - 2⁸ = 1226257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1226503) 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, 16538 + ... + 16611.

It is an arithmetic number, because the mean of its divisors is an integer number (314925).

2^1226513 is an apocalyptic number.

It is an amenable number.

1226513 is a deficient number, since it is larger than the sum of its proper divisors (33187).

1226513 is an equidigital number, since it uses as much as digits as its factorization.

1226513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33186.

The product of its digits is 360, while the sum is 20.

The square root of 1226513 is about 1107.4804738685. The cubic root of 1226513 is about 107.0427813903.

The spelling of 1226513 in words is "one million, two hundred twenty-six thousand, five hundred thirteen".