47117511 has 32 divisors (see below), whose sum is σ = 83980800. Its totient is φ = 25505280.

The previous prime is 47117509. The next prime is 47117531. The reversal of 47117511 is 11571174.

It is not a de Polignac number, because 47117511 - 2¹ = 47117509 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47117531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2970 + ... + 10151.

It is an arithmetic number, because the mean of its divisors is an integer number (2624400).

Almost surely, 2^47117511 is an apocalyptic number.

47117511 is a deficient number, since it is larger than the sum of its proper divisors (36863289).

47117511 is a wasteful number, since it uses less digits than its factorization.

47117511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13156 (or 13150 counting only the distinct ones).

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

The square root of 47117511 is about 6864.2196206124. The cubic root of 47117511 is about 361.1831213623.

Adding to 47117511 its reverse (11571174), we get a palindrome (58688685).

The spelling of 47117511 in words is "forty-seven million, one hundred seventeen thousand, five hundred eleven".