253639063 has 2 divisors, whose sum is σ = 253639064. Its totient is φ = 253639062.

The previous prime is 253639049. The next prime is 253639121. The reversal of 253639063 is 360936352.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253639063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253639003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126819531 + 126819532.

It is an arithmetic number, because the mean of its divisors is an integer number (126819532).

Almost surely, 2^253639063 is an apocalyptic number.

253639063 is a deficient number, since it is larger than the sum of its proper divisors (1).

253639063 is an equidigital number, since it uses as much as digits as its factorization.

253639063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 37.

The square root of 253639063 is about 15926.0498241089. The cubic root of 253639063 is about 633.0024341312.

The spelling of 253639063 in words is "two hundred fifty-three million, six hundred thirty-nine thousand, sixty-three".