494545553 has 2 divisors, whose sum is σ = 494545554. Its totient is φ = 494545552.

The previous prime is 494545549. The next prime is 494545561. The reversal of 494545553 is 355545494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388208209 + 106337344 = 19703^2 + 10312^2 .

It is a cyclic number.

It is not a de Polignac number, because 494545553 - 2² = 494545549 is a prime.

It is not a weakly prime, because it can be changed into another prime (494545523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247272776 + 247272777.

It is an arithmetic number, because the mean of its divisors is an integer number (247272777).

Almost surely, 2^494545553 is an apocalyptic number.

It is an amenable number.

494545553 is a deficient number, since it is larger than the sum of its proper divisors (1).

494545553 is an equidigital number, since it uses as much as digits as its factorization.

494545553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080000, while the sum is 44.

The square root of 494545553 is about 22238.3801793206. The cubic root of 494545553 is about 790.8038354440.

The spelling of 494545553 in words is "four hundred ninety-four million, five hundred forty-five thousand, five hundred fifty-three".