47131522 has 8 divisors (see below), whose sum is σ = 72031356. Its totient is φ = 23121072.

The previous prime is 47131519. The next prime is 47131523. The reversal of 47131522 is 22513174.

It is a happy number.

47131522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43705321 + 3426201 = 6611^2 + 1851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (47131523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 222213 + ... + 222424.

Almost surely, 2^47131522 is an apocalyptic number.

47131522 is a deficient number, since it is larger than the sum of its proper divisors (24899834).

47131522 is a wasteful number, since it uses less digits than its factorization.

47131522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444692.

The product of its digits is 1680, while the sum is 25.

The square root of 47131522 is about 6865.2401269002. The cubic root of 47131522 is about 361.2189186351.

Adding to 47131522 its reverse (22513174), we get a palindrome (69644696).

The spelling of 47131522 in words is "forty-seven million, one hundred thirty-one thousand, five hundred twenty-two".