49815117 has 24 divisors (see below), whose sum is σ = 83116800. Its totient is φ = 28414080.

The previous prime is 49815097. The next prime is 49815133. The reversal of 49815117 is 71151894.

49815117 is a `hidden beast` number, since 498 + 151 + 17 = 666.

It is not a de Polignac number, because 49815117 - 2⁶ = 49815053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49815137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13117 + ... + 16482.

It is an arithmetic number, because the mean of its divisors is an integer number (3463200).

Almost surely, 2^49815117 is an apocalyptic number.

It is an amenable number.

49815117 is a deficient number, since it is larger than the sum of its proper divisors (33301683).

49815117 is a wasteful number, since it uses less digits than its factorization.

49815117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29633 (or 29630 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 49815117 is about 7057.9825021036. The cubic root of 49815117 is about 367.9485125076.

The spelling of 49815117 in words is "forty-nine million, eight hundred fifteen thousand, one hundred seventeen".