49509517 has 4 divisors (see below), whose sum is σ = 49600576. Its totient is φ = 49418460.

The previous prime is 49509463. The next prime is 49509521. The reversal of 49509517 is 71590594.

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 49509517 - 2¹⁹ = 48985229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49509517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49509587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44709 + ... + 45802.

It is an arithmetic number, because the mean of its divisors is an integer number (12400144).

Almost surely, 2^49509517 is an apocalyptic number.

It is an amenable number.

49509517 is a deficient number, since it is larger than the sum of its proper divisors (91059).

49509517 is an equidigital number, since it uses as much as digits as its factorization.

49509517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91058.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 49509517 is about 7036.2999509685. The cubic root of 49509517 is about 367.1945526830.

The spelling of 49509517 in words is "forty-nine million, five hundred nine thousand, five hundred seventeen".