253403663 has 2 divisors, whose sum is σ = 253403664. Its totient is φ = 253403662.

The previous prime is 253403617. The next prime is 253403671. The reversal of 253403663 is 366304352.

253403663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253403663 - 2⁶ = 253403599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253403063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126701831 + 126701832.

It is an arithmetic number, because the mean of its divisors is an integer number (126701832).

Almost surely, 2^253403663 is an apocalyptic number.

253403663 is a deficient number, since it is larger than the sum of its proper divisors (1).

253403663 is an equidigital number, since it uses as much as digits as its factorization.

253403663 is an evil number, because the sum of its binary digits is even.

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

The square root of 253403663 is about 15918.6577009495. The cubic root of 253403663 is about 632.8065456734.

The spelling of 253403663 in words is "two hundred fifty-three million, four hundred three thousand, six hundred sixty-three".