73137443 has 2 divisors, whose sum is σ = 73137444. Its totient is φ = 73137442.

The previous prime is 73137409. The next prime is 73137457. The reversal of 73137443 is 34473137.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73137443 - 2¹⁰ = 73136419 is a prime.

It is not a weakly prime, because it can be changed into another prime (73137943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36568721 + 36568722.

It is an arithmetic number, because the mean of its divisors is an integer number (36568722).

Almost surely, 2^73137443 is an apocalyptic number.

73137443 is a deficient number, since it is larger than the sum of its proper divisors (1).

73137443 is an equidigital number, since it uses as much as digits as its factorization.

73137443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 32.

The square root of 73137443 is about 8552.0432061584. The cubic root of 73137443 is about 418.1960478531.

The spelling of 73137443 in words is "seventy-three million, one hundred thirty-seven thousand, four hundred forty-three".