72503 has 2 divisors, whose sum is σ = 72504. Its totient is φ = 72502.

The previous prime is 72497. The next prime is 72533. The reversal of 72503 is 30527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72503 - 2¹⁰ = 71479 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36251 + 36252.

It is an arithmetic number, because the mean of its divisors is an integer number (36252).

2⁷²⁵⁰³ is an apocalyptic number.

72503 is a deficient number, since it is larger than the sum of its proper divisors (1).

72503 is an equidigital number, since it uses as much as digits as its factorization.

72503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 72503 is about 269.2638111592. The cubic root of 72503 is about 41.6983297105.

It can be divided in two parts, 72 and 503, that added together give a palindrome (575).

The spelling of 72503 in words is "seventy-two thousand, five hundred three".