253764403 has 2 divisors, whose sum is σ = 253764404. Its totient is φ = 253764402.

The previous prime is 253764397. The next prime is 253764479. The reversal of 253764403 is 304467352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253764403 - 2²⁵ = 220209971 is a prime.

It is not a weakly prime, because it can be changed into another prime (253764503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126882201 + 126882202.

It is an arithmetic number, because the mean of its divisors is an integer number (126882202).

Almost surely, 2^253764403 is an apocalyptic number.

253764403 is a deficient number, since it is larger than the sum of its proper divisors (1).

253764403 is an equidigital number, since it uses as much as digits as its factorization.

253764403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 253764403 is about 15929.9844004946. The cubic root of 253764403 is about 633.1066865527.

The spelling of 253764403 in words is "two hundred fifty-three million, seven hundred sixty-four thousand, four hundred three".