72508103 has 2 divisors, whose sum is σ = 72508104. Its totient is φ = 72508102.

The previous prime is 72508087. The next prime is 72508133. The reversal of 72508103 is 30180527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72508103 - 2⁴ = 72508087 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72508133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36254051 + 36254052.

It is an arithmetic number, because the mean of its divisors is an integer number (36254052).

Almost surely, 2^72508103 is an apocalyptic number.

72508103 is a deficient number, since it is larger than the sum of its proper divisors (1).

72508103 is an equidigital number, since it uses as much as digits as its factorization.

72508103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 72508103 is about 8515.1689942126. The cubic root of 72508103 is about 416.9930797618.

The spelling of 72508103 in words is "seventy-two million, five hundred eight thousand, one hundred three".