253442503 has 2 divisors, whose sum is σ = 253442504. Its totient is φ = 253442502.

The previous prime is 253442479. The next prime is 253442509. The reversal of 253442503 is 305244352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253442503 - 2¹⁷ = 253311431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253442509) 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, 126721251 + 126721252.

It is an arithmetic number, because the mean of its divisors is an integer number (126721252).

Almost surely, 2^253442503 is an apocalyptic number.

253442503 is a deficient number, since it is larger than the sum of its proper divisors (1).

253442503 is an equidigital number, since it uses as much as digits as its factorization.

253442503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 253442503 is about 15919.8776063134. The cubic root of 253442503 is about 632.8388747912.

Adding to 253442503 its reverse (305244352), we get a palindrome (558686855).

The spelling of 253442503 in words is "two hundred fifty-three million, four hundred forty-two thousand, five hundred three".