555216469 has 2 divisors, whose sum is σ = 555216470. Its totient is φ = 555216468.

The previous prime is 555216463. The next prime is 555216511. The reversal of 555216469 is 964612555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279324369 + 275892100 = 16713^2 + 16610^2 .

It is a cyclic number.

It is not a de Polignac number, because 555216469 - 2⁵ = 555216437 is a prime.

It is a super-2 number, since 2×555216469² = 616530654897655922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555216463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277608234 + 277608235.

It is an arithmetic number, because the mean of its divisors is an integer number (277608235).

Almost surely, 2^555216469 is an apocalyptic number.

It is an amenable number.

555216469 is a deficient number, since it is larger than the sum of its proper divisors (1).

555216469 is an equidigital number, since it uses as much as digits as its factorization.

555216469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 43.

The square root of 555216469 is about 23563.0318295418. The cubic root of 555216469 is about 821.9034055327.

The spelling of 555216469 in words is "five hundred fifty-five million, two hundred sixteen thousand, four hundred sixty-nine".