73455139 has 2 divisors, whose sum is σ = 73455140. Its totient is φ = 73455138.

The previous prime is 73455103. The next prime is 73455143. The reversal of 73455139 is 93155437.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73455139 - 2¹⁷ = 73324067 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73455098 and 73455107.

It is not a weakly prime, because it can be changed into another prime (73455439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36727569 + 36727570.

It is an arithmetic number, because the mean of its divisors is an integer number (36727570).

Almost surely, 2^73455139 is an apocalyptic number.

73455139 is a deficient number, since it is larger than the sum of its proper divisors (1).

73455139 is an equidigital number, since it uses as much as digits as its factorization.

73455139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 37.

The square root of 73455139 is about 8570.5973537438. The cubic root of 73455139 is about 418.8006962012.

The spelling of 73455139 in words is "seventy-three million, four hundred fifty-five thousand, one hundred thirty-nine".