73115137 has 4 divisors (see below), whose sum is σ = 76294080. Its totient is φ = 69936196.

The previous prime is 73115089. The next prime is 73115209. The reversal of 73115137 is 73151137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73115137 - 2¹⁵ = 73082369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73113137) 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 in 3 ways as a sum of consecutive naturals, for example, 1589437 + ... + 1589482.

It is an arithmetic number, because the mean of its divisors is an integer number (19073520).

Almost surely, 2^73115137 is an apocalyptic number.

It is an amenable number.

73115137 is a deficient number, since it is larger than the sum of its proper divisors (3178943).

73115137 is a wasteful number, since it uses less digits than its factorization.

73115137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178942.

The product of its digits is 2205, while the sum is 28.

The square root of 73115137 is about 8550.7389739133. The cubic root of 73115137 is about 418.1535286858.

The spelling of 73115137 in words is "seventy-three million, one hundred fifteen thousand, one hundred thirty-seven".