47511117 has 14 divisors (see below), whose sum is σ = 71235182. Its totient is φ = 31673592.

The previous prime is 47511097. The next prime is 47511133. The reversal of 47511117 is 71111574.

It can be written as a sum of positive squares in only one way, i.e., 24413481 + 23097636 = 4941^2 + 4806^2 .

It is not a de Polignac number, because 47511117 - 2¹⁵ = 47478349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47511187) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 31858 + ... + 33315.

Almost surely, 2^47511117 is an apocalyptic number.

It is an amenable number.

47511117 is a deficient number, since it is larger than the sum of its proper divisors (23724065).

47511117 is an frugal number, since it uses more digits than its factorization.

47511117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65191 (or 65176 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 47511117 is about 6892.8308408084. The cubic root of 47511117 is about 362.1860733613.

The spelling of 47511117 in words is "forty-seven million, five hundred eleven thousand, one hundred seventeen".