73545013 has 2 divisors, whose sum is σ = 73545014. Its totient is φ = 73545012.

The previous prime is 73544993. The next prime is 73545019. The reversal of 73545013 is 31054537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73307844 + 237169 = 8562^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 73545013 - 2⁵ = 73544981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73545019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36772506 + 36772507.

It is an arithmetic number, because the mean of its divisors is an integer number (36772507).

Almost surely, 2^73545013 is an apocalyptic number.

It is an amenable number.

73545013 is a deficient number, since it is larger than the sum of its proper divisors (1).

73545013 is an equidigital number, since it uses as much as digits as its factorization.

73545013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 73545013 is about 8575.8389094012. The cubic root of 73545013 is about 418.9714305836.

The spelling of 73545013 in words is "seventy-three million, five hundred forty-five thousand, thirteen".