522213345 has 16 divisors (see below), whose sum is σ = 928379520. Its totient is φ = 278513712.

The previous prime is 522213323. The next prime is 522213359. The reversal of 522213345 is 543312225.

It is a happy number.

522213345 is a `hidden beast` number, since 522 + 2 + 133 + 4 + 5 = 666.

It is not a de Polignac number, because 522213345 - 2⁷ = 522213217 is a prime.

It is a super-3 number, since 3×522213345³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1933989 + ... + 1934258.

It is an arithmetic number, because the mean of its divisors is an integer number (58023720).

Almost surely, 2^522213345 is an apocalyptic number.

It is an amenable number.

522213345 is a deficient number, since it is larger than the sum of its proper divisors (406166175).

522213345 is a wasteful number, since it uses less digits than its factorization.

522213345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868261 (or 3868255 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 522213345 is about 22851.9877691198. The cubic root of 522213345 is about 805.2844666754.

The spelling of 522213345 in words is "five hundred twenty-two million, two hundred thirteen thousand, three hundred forty-five".