273503 has 2 divisors, whose sum is σ = 273504. Its totient is φ = 273502.

The previous prime is 273473. The next prime is 273517. The reversal of 273503 is 305372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 273503 - 2¹⁶ = 207967 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136751 + 136752.

It is an arithmetic number, because the mean of its divisors is an integer number (136752).

2²⁷³⁵⁰³ is an apocalyptic number.

273503 is a deficient number, since it is larger than the sum of its proper divisors (1).

273503 is an equidigital number, since it uses as much as digits as its factorization.

273503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 273503 is about 522.9751428127. The cubic root of 273503 is about 64.9113584630.

Adding to 273503 its reverse (305372), we get a palindrome (578875).

The spelling of 273503 in words is "two hundred seventy-three thousand, five hundred three".