521226116 has 12 divisors (see below), whose sum is σ = 912311820. Its totient is φ = 260565600.

The previous prime is 521226113. The next prime is 521226127. The reversal of 521226116 is 611622125.

It can be written as a sum of positive squares in 2 ways, for example, as 223801600 + 297424516 = 14960^2 + 17246^2 .

It is not an unprimeable number, because it can be changed into a prime (521226113) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26966 + ... + 42066.

It is an arithmetic number, because the mean of its divisors is an integer number (76025985).

Almost surely, 2^521226116 is an apocalyptic number.

It is an amenable number.

521226116 is a deficient number, since it is larger than the sum of its proper divisors (391085704).

521226116 is a wasteful number, since it uses less digits than its factorization.

521226116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23734 (or 23732 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 521226116 is about 22830.3770446307. The cubic root of 521226116 is about 804.7766910138.

The spelling of 521226116 in words is "five hundred twenty-one million, two hundred twenty-six thousand, one hundred sixteen".