521219226 has 16 divisors (see below), whose sum is σ = 1137205728. Its totient is φ = 157945200.

The previous prime is 521219221. The next prime is 521219249. The reversal of 521219226 is 622912125.

It is a junction number, because it is equal to n+sod(n) for n = 521219193 and 521219202.

It is not an unprimeable number, because it can be changed into a prime (521219221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3948565 + ... + 3948696.

It is an arithmetic number, because the mean of its divisors is an integer number (71075358).

Almost surely, 2^521219226 is an apocalyptic number.

521219226 is an abundant number, since it is smaller than the sum of its proper divisors (615986502).

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

521219226 is a wasteful number, since it uses less digits than its factorization.

521219226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897277.

The product of its digits is 4320, while the sum is 30.

The square root of 521219226 is about 22830.2261486828. The cubic root of 521219226 is about 804.7731449291.

The spelling of 521219226 in words is "five hundred twenty-one million, two hundred nineteen thousand, two hundred twenty-six".