493055551 has 2 divisors, whose sum is σ = 493055552. Its totient is φ = 493055550.

The previous prime is 493055533. The next prime is 493055557. The reversal of 493055551 is 155550394.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 493055551 - 2⁹ = 493055039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 493055551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493055557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246527775 + 246527776.

It is an arithmetic number, because the mean of its divisors is an integer number (246527776).

Almost surely, 2^493055551 is an apocalyptic number.

493055551 is a deficient number, since it is larger than the sum of its proper divisors (1).

493055551 is an equidigital number, since it uses as much as digits as its factorization.

493055551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 493055551 is about 22204.8542215435. The cubic root of 493055551 is about 790.0088398306.

The spelling of 493055551 in words is "four hundred ninety-three million, fifty-five thousand, five hundred fifty-one".