72539003 has 2 divisors, whose sum is σ = 72539004. Its totient is φ = 72539002.

The previous prime is 72538951. The next prime is 72539053. The reversal of 72539003 is 30093527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72539003 - 2⁸ = 72538747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72539053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36269501 + 36269502.

It is an arithmetic number, because the mean of its divisors is an integer number (36269502).

Almost surely, 2^72539003 is an apocalyptic number.

72539003 is a deficient number, since it is larger than the sum of its proper divisors (1).

72539003 is an equidigital number, since it uses as much as digits as its factorization.

72539003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 72539003 is about 8516.9832100339. The cubic root of 72539003 is about 417.0523065043.

The spelling of 72539003 in words is "seventy-two million, five hundred thirty-nine thousand, three".