73000003 has 2 divisors, whose sum is σ = 73000004. Its totient is φ = 73000002.

The previous prime is 72999991. The next prime is 73000013. The reversal of 73000003 is 30000037.

It is a strong prime.

It is an emirp because it is prime and its reverse (30000037) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73000003 is a prime.

It is not a weakly prime, because it can be changed into another prime (73000013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36500001 + 36500002.

It is an arithmetic number, because the mean of its divisors is an integer number (36500002).

Almost surely, 2^73000003 is an apocalyptic number.

73000003 is a deficient number, since it is larger than the sum of its proper divisors (1).

73000003 is an equidigital number, since it uses as much as digits as its factorization.

73000003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63, while the sum is 13.

The square root of 73000003 is about 8544.0039208793. The cubic root of 73000003 is about 417.9339253632.

The spelling of 73000003 in words is "seventy-three million, three", and thus it is an aban number and an uban number.