63375553 has 2 divisors, whose sum is σ = 63375554. Its totient is φ = 63375552.

The previous prime is 63375547. The next prime is 63375589. The reversal of 63375553 is 35557336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55011889 + 8363664 = 7417^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 63375553 - 2¹³ = 63367361 is a prime.

It is not a weakly prime, because it can be changed into another prime (63375953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31687776 + 31687777.

It is an arithmetic number, because the mean of its divisors is an integer number (31687777).

Almost surely, 2^63375553 is an apocalyptic number.

It is an amenable number.

63375553 is a deficient number, since it is larger than the sum of its proper divisors (1).

63375553 is an equidigital number, since it uses as much as digits as its factorization.

63375553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141750, while the sum is 37.

The square root of 63375553 is about 7960.8763964780. The cubic root of 63375553 is about 398.6948146098.

The spelling of 63375553 in words is "sixty-three million, three hundred seventy-five thousand, five hundred fifty-three".