522420623 has 2 divisors, whose sum is σ = 522420624. Its totient is φ = 522420622.

The previous prime is 522420611. The next prime is 522420707. The reversal of 522420623 is 326024225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 522420623 - 2⁶ = 522420559 is a prime.

It is a super-3 number, since 3×522420623³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 522420592 and 522420601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522420023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261210311 + 261210312.

It is an arithmetic number, because the mean of its divisors is an integer number (261210312).

Almost surely, 2^522420623 is an apocalyptic number.

522420623 is a deficient number, since it is larger than the sum of its proper divisors (1).

522420623 is an equidigital number, since it uses as much as digits as its factorization.

522420623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 522420623 is about 22856.5225482793. The cubic root of 522420623 is about 805.3909976400.

Adding to 522420623 its reverse (326024225), we get a palindrome (848444848).

The spelling of 522420623 in words is "five hundred twenty-two million, four hundred twenty thousand, six hundred twenty-three".