555228131 has 2 divisors, whose sum is σ = 555228132. Its totient is φ = 555228130.

The previous prime is 555228071. The next prime is 555228151. The reversal of 555228131 is 131822555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555228131 - 2⁶ = 555228067 is a prime.

It is a super-2 number, since 2×555228131² = 616556554907506322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (555228151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277614065 + 277614066.

It is an arithmetic number, because the mean of its divisors is an integer number (277614066).

Almost surely, 2^555228131 is an apocalyptic number.

555228131 is a deficient number, since it is larger than the sum of its proper divisors (1).

555228131 is an equidigital number, since it uses as much as digits as its factorization.

555228131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 32.

The square root of 555228131 is about 23563.2792921529. The cubic root of 555228131 is about 821.9091600273.

The spelling of 555228131 in words is "five hundred fifty-five million, two hundred twenty-eight thousand, one hundred thirty-one".