47481531 has 8 divisors (see below), whose sum is σ = 63630864. Its totient is φ = 31493280.

The previous prime is 47481523. The next prime is 47481557. The reversal of 47481531 is 13518474.

47481531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 47481531 - 2³ = 47481523 is a prime.

It is a super-2 number, since 2×47481531² = 4508991572207922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47481492 and 47481501.

It is not an unprimeable number, because it can be changed into a prime (47481431) 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 7 ways as a sum of consecutive naturals, for example, 39580 + ... + 40761.

It is an arithmetic number, because the mean of its divisors is an integer number (7953858).

Almost surely, 2^47481531 is an apocalyptic number.

47481531 is a deficient number, since it is larger than the sum of its proper divisors (16149333).

47481531 is a wasteful number, since it uses less digits than its factorization.

47481531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80541.

The product of its digits is 13440, while the sum is 33.

The square root of 47481531 is about 6890.6843636899. The cubic root of 47481531 is about 362.1108778920.

The spelling of 47481531 in words is "forty-seven million, four hundred eighty-one thousand, five hundred thirty-one".