47087513 has 12 divisors (see below), whose sum is σ = 52283364. Its totient is φ = 42372000.

The previous prime is 47087489. The next prime is 47087519. The reversal of 47087513 is 31578074.

It can be written as a sum of positive squares in 2 ways, for example, as 46063369 + 1024144 = 6787^2 + 1012^2 .

It is not a de Polignac number, because 47087513 - 2⁶ = 47087449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47087519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10295 + ... + 14147.

It is an arithmetic number, because the mean of its divisors is an integer number (4356947).

Almost surely, 2^47087513 is an apocalyptic number.

It is an amenable number.

47087513 is a deficient number, since it is larger than the sum of its proper divisors (5195851).

47087513 is a wasteful number, since it uses less digits than its factorization.

47087513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 3965 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 47087513 is about 6862.0341736252. The cubic root of 47087513 is about 361.1064543848.

It can be divided in two parts, 4708 and 7513, that added together give a palindrome (12221).

The spelling of 47087513 in words is "forty-seven million, eighty-seven thousand, five hundred thirteen".