47152531 has 2 divisors, whose sum is σ = 47152532. Its totient is φ = 47152530.

The previous prime is 47152513. The next prime is 47152559. The reversal of 47152531 is 13525174.

It is a happy number.

Together with previous prime (47152513) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (47152559) can be obtained adding 47152531 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47152531 - 2⁵ = 47152499 is a prime.

It is a super-2 number, since 2×47152531² = 4446722359411922, which contains 22 as substring.

It is equal to p_2840293 and since 47152531 and 2840293 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47152531.

It is not a weakly prime, because it can be changed into another prime (47152571) 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 as a sum of consecutive naturals, namely, 23576265 + 23576266.

It is an arithmetic number, because the mean of its divisors is an integer number (23576266).

Almost surely, 2^47152531 is an apocalyptic number.

47152531 is a deficient number, since it is larger than the sum of its proper divisors (1).

47152531 is an equidigital number, since it uses as much as digits as its factorization.

47152531 is an odious number, because the sum of its binary digits is odd.

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

The square root of 47152531 is about 6866.7700558560. The cubic root of 47152531 is about 361.2725820903.

The spelling of 47152531 in words is "forty-seven million, one hundred fifty-two thousand, five hundred thirty-one".