73137505 has 8 divisors (see below), whose sum is σ = 100302912. Its totient is φ = 50151408.

The previous prime is 73137503. The next prime is 73137511. The reversal of 73137505 is 50573137.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73137505 - 2¹ = 73137503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73137503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044787 + ... + 1044856.

It is an arithmetic number, because the mean of its divisors is an integer number (12537864).

Almost surely, 2^73137505 is an apocalyptic number.

It is an amenable number.

73137505 is a deficient number, since it is larger than the sum of its proper divisors (27165407).

73137505 is a wasteful number, since it uses less digits than its factorization.

73137505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089655.

The product of its (nonzero) digits is 11025, while the sum is 31.

The square root of 73137505 is about 8552.0468310224. The cubic root of 73137505 is about 418.1961660240.

The spelling of 73137505 in words is "seventy-three million, one hundred thirty-seven thousand, five hundred five".