73285757 has 4 divisors (see below), whose sum is σ = 73311516. Its totient is φ = 73260000.

The previous prime is 73285733. The next prime is 73285769. The reversal of 73285757 is 75758237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75758237 = 29 ⋅2612353.

It can be written as a sum of positive squares in 2 ways, for example, as 70375321 + 2910436 = 8389^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 73285757 - 2¹⁶ = 73220221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73285727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7994 + ... + 14507.

It is an arithmetic number, because the mean of its divisors is an integer number (18327879).

Almost surely, 2^73285757 is an apocalyptic number.

It is an amenable number.

73285757 is a deficient number, since it is larger than the sum of its proper divisors (25759).

73285757 is a wasteful number, since it uses less digits than its factorization.

73285757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25758.

The product of its digits is 411600, while the sum is 44.

The square root of 73285757 is about 8560.7100756888. The cubic root of 73285757 is about 418.4785408658.

The spelling of 73285757 in words is "seventy-three million, two hundred eighty-five thousand, seven hundred fifty-seven".