47521315 has 16 divisors (see below), whose sum is σ = 57866400. Its totient is φ = 37461760.

The previous prime is 47521259. The next prime is 47521333. The reversal of 47521315 is 51312574.

It is a happy number.

47521315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47521315 - 2¹⁵ = 47488547 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168975 + ... + 169255.

It is an arithmetic number, because the mean of its divisors is an integer number (3616650).

Almost surely, 2^47521315 is an apocalyptic number.

47521315 is a deficient number, since it is larger than the sum of its proper divisors (10345085).

47521315 is a wasteful number, since it uses less digits than its factorization.

47521315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 4200, while the sum is 28.

The square root of 47521315 is about 6893.5705552348. The cubic root of 47521315 is about 362.2119852571.

Adding to 47521315 its reverse (51312574), we get a palindrome (98833889).

The spelling of 47521315 in words is "forty-seven million, five hundred twenty-one thousand, three hundred fifteen".