554231999 has 2 divisors, whose sum is σ = 554232000. Its totient is φ = 554231998.

The previous prime is 554231947. The next prime is 554232001. The reversal of 554231999 is 999132455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-554231999 is a prime.

Together with 554232001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554231939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277115999 + 277116000.

It is an arithmetic number, because the mean of its divisors is an integer number (277116000).

Almost surely, 2^554231999 is an apocalyptic number.

554231999 is a deficient number, since it is larger than the sum of its proper divisors (1).

554231999 is an equidigital number, since it uses as much as digits as its factorization.

554231999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 47.

The square root of 554231999 is about 23542.1324225313. The cubic root of 554231999 is about 821.4173380867.

The spelling of 554231999 in words is "five hundred fifty-four million, two hundred thirty-one thousand, nine hundred ninety-nine".