63255553 has 4 divisors (see below), whose sum is σ = 64449108. Its totient is φ = 62062000.

The previous prime is 63255551. The next prime is 63255581. The reversal of 63255553 is 35555236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18939904 + 44315649 = 4352^2 + 6657^2 .

It is a cyclic number.

It is not a de Polignac number, because 63255553 - 2¹ = 63255551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63255551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596698 + ... + 596803.

It is an arithmetic number, because the mean of its divisors is an integer number (16112277).

Almost surely, 2^63255553 is an apocalyptic number.

It is an amenable number.

63255553 is a deficient number, since it is larger than the sum of its proper divisors (1193555).

63255553 is a wasteful number, since it uses less digits than its factorization.

63255553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193554.

The product of its digits is 67500, while the sum is 34.

The square root of 63255553 is about 7953.3359667501. The cubic root of 63255553 is about 398.4430161164.

The spelling of 63255553 in words is "sixty-three million, two hundred fifty-five thousand, five hundred fifty-three".