554603813 has 2 divisors, whose sum is σ = 554603814. Its totient is φ = 554603812.

The previous prime is 554603771. The next prime is 554603831. The reversal of 554603813 is 318306455.

Together with next prime (554603831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357285604 + 197318209 = 18902^2 + 14047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-554603813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554603213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277301906 + 277301907.

It is an arithmetic number, because the mean of its divisors is an integer number (277301907).

Almost surely, 2^554603813 is an apocalyptic number.

It is an amenable number.

554603813 is a deficient number, since it is larger than the sum of its proper divisors (1).

554603813 is an equidigital number, since it uses as much as digits as its factorization.

554603813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 554603813 is about 23550.0278768413. The cubic root of 554603813 is about 821.6009833201.

The spelling of 554603813 in words is "five hundred fifty-four million, six hundred three thousand, eight hundred thirteen".