253643063 has 4 divisors (see below), whose sum is σ = 257801208. Its totient is φ = 249484920.

The previous prime is 253643051. The next prime is 253643087. The reversal of 253643063 is 360346352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253643063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253643363) 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, 2078981 + ... + 2079102.

It is an arithmetic number, because the mean of its divisors is an integer number (64450302).

Almost surely, 2^253643063 is an apocalyptic number.

253643063 is a deficient number, since it is larger than the sum of its proper divisors (4158145).

253643063 is an equidigital number, since it uses as much as digits as its factorization.

253643063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158144.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 253643063 is about 15926.1754040322. The cubic root of 253643063 is about 633.0057616896.

The spelling of 253643063 in words is "two hundred fifty-three million, six hundred forty-three thousand, sixty-three".