521330226 has 8 divisors (see below), whose sum is σ = 1042660464. Its totient is φ = 173776740.

The previous prime is 521330197. The next prime is 521330239. The reversal of 521330226 is 622033125.

It is a sphenic number, since it is the product of 3 distinct primes.

521330226 is an admirable number.

It is a super-2 number, since 2×521330226² = 543570409082422152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 521330196 and 521330205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43444180 + ... + 43444191.

It is an arithmetic number, because the mean of its divisors is an integer number (130332558).

Almost surely, 2^521330226 is an apocalyptic number.

521330226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

521330226 is a wasteful number, since it uses less digits than its factorization.

521330226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86888376.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 521330226 is about 22832.6570070152. The cubic root of 521330226 is about 804.8302696309.

The spelling of 521330226 in words is "five hundred twenty-one million, three hundred thirty thousand, two hundred twenty-six".