522146431 has 2 divisors, whose sum is σ = 522146432. Its totient is φ = 522146430.

The previous prime is 522146419. The next prime is 522146489. The reversal of 522146431 is 134641225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 522146431 - 2⁵ = 522146399 is a prime.

It is a super-2 number, since 2×522146431² = 545273790812075522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 522146431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522146731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261073215 + 261073216.

It is an arithmetic number, because the mean of its divisors is an integer number (261073216).

Almost surely, 2^522146431 is an apocalyptic number.

522146431 is a deficient number, since it is larger than the sum of its proper divisors (1).

522146431 is an equidigital number, since it uses as much as digits as its factorization.

522146431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 522146431 is about 22850.5236482668. The cubic root of 522146431 is about 805.2500700653.

Adding to 522146431 its reverse (134641225), we get a palindrome (656787656).

It can be divided in two parts, 5 and 22146431, that added together give a square (22146436 = 4706²).

The spelling of 522146431 in words is "five hundred twenty-two million, one hundred forty-six thousand, four hundred thirty-one".