49129517 has 4 divisors (see below), whose sum is σ = 49289856. Its totient is φ = 48969180.

The previous prime is 49129453. The next prime is 49129529. The reversal of 49129517 is 71592194.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71592194 = 2 ⋅35796097.

It is a cyclic number.

It is not a de Polignac number, because 49129517 - 2⁶ = 49129453 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 (49129417) 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, 79709 + ... + 80322.

It is an arithmetic number, because the mean of its divisors is an integer number (12322464).

Almost surely, 2^49129517 is an apocalyptic number.

It is an amenable number.

49129517 is a deficient number, since it is larger than the sum of its proper divisors (160339).

49129517 is a wasteful number, since it uses less digits than its factorization.

49129517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160338.

The product of its digits is 22680, while the sum is 38.

The square root of 49129517 is about 7009.2451091398. The cubic root of 49129517 is about 366.2526970801.

The spelling of 49129517 in words is "forty-nine million, one hundred twenty-nine thousand, five hundred seventeen".