73436557 has 2 divisors, whose sum is σ = 73436558. Its totient is φ = 73436556.

The previous prime is 73436509. The next prime is 73436563. The reversal of 73436557 is 75563437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42367081 + 31069476 = 6509^2 + 5574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73436557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73436567) 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, 36718278 + 36718279.

It is an arithmetic number, because the mean of its divisors is an integer number (36718279).

Almost surely, 2^73436557 is an apocalyptic number.

It is an amenable number.

73436557 is a deficient number, since it is larger than the sum of its proper divisors (1).

73436557 is an equidigital number, since it uses as much as digits as its factorization.

73436557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 40.

The square root of 73436557 is about 8569.5132300499. The cubic root of 73436557 is about 418.7653784506.

The spelling of 73436557 in words is "seventy-three million, four hundred thirty-six thousand, five hundred fifty-seven".