555412681 has 2 divisors, whose sum is σ = 555412682. Its totient is φ = 555412680.

The previous prime is 555412667. The next prime is 555412721. The reversal of 555412681 is 186214555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449652025 + 105760656 = 21205^2 + 10284^2 .

It is a cyclic number.

It is not a de Polignac number, because 555412681 - 2¹⁹ = 554888393 is a prime.

It is a super-2 number, since 2×555412681² = 616966492431215522, 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 555412681.

It is not a weakly prime, because it can be changed into another prime (555412601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277706340 + 277706341.

It is an arithmetic number, because the mean of its divisors is an integer number (277706341).

Almost surely, 2^555412681 is an apocalyptic number.

It is an amenable number.

555412681 is a deficient number, since it is larger than the sum of its proper divisors (1).

555412681 is an equidigital number, since it uses as much as digits as its factorization.

555412681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 37.

The square root of 555412681 is about 23567.1950176511. The cubic root of 555412681 is about 822.0002136106. Note that the first 3 decimals are identical.

The spelling of 555412681 in words is "five hundred fifty-five million, four hundred twelve thousand, six hundred eighty-one".