522281421 has 6 divisors (see below), whose sum is σ = 754406510. Its totient is φ = 348187608.

The previous prime is 522281407. The next prime is 522281423. The reversal of 522281421 is 124182225.

It can be written as a sum of positive squares in only one way, i.e., 309267396 + 213014025 = 17586^2 + 14595^2 .

It is not a de Polignac number, because 522281421 - 2¹³ = 522273229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522281423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29015626 + ... + 29015643.

Almost surely, 2^522281421 is an apocalyptic number.

It is an amenable number.

522281421 is a deficient number, since it is larger than the sum of its proper divisors (232125089).

522281421 is a wasteful number, since it uses less digits than its factorization.

522281421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58031275 (or 58031272 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 522281421 is about 22853.4772190142. The cubic root of 522281421 is about 805.3194575873.

The spelling of 522281421 in words is "five hundred twenty-two million, two hundred eighty-one thousand, four hundred twenty-one".