1365521226 has 32 divisors (see below), whose sum is σ = 2901624768. Its totient is φ = 426927360.

The previous prime is 1365521207. The next prime is 1365521249. The reversal of 1365521226 is 6221255631.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7041 + ... + 52731.

It is an arithmetic number, because the mean of its divisors is an integer number (90675774).

Almost surely, 2^1365521226 is an apocalyptic number.

1365521226 is an abundant number, since it is smaller than the sum of its proper divisors (1536103542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1365521226 is a wasteful number, since it uses less digits than its factorization.

1365521226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46006.

The product of its digits is 21600, while the sum is 33.

The square root of 1365521226 is about 36952.9596378964. The cubic root of 1365521226 is about 1109.4289262747.

Adding to 1365521226 its reverse (6221255631), we get a palindrome (7586776857).

The spelling of 1365521226 in words is "one billion, three hundred sixty-five million, five hundred twenty-one thousand, two hundred twenty-six".