47975531 has 2 divisors, whose sum is σ = 47975532. Its totient is φ = 47975530.

The previous prime is 47975519. The next prime is 47975533. The reversal of 47975531 is 13557974.

47975531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47975531 is a prime.

It is a super-2 number, since 2×47975531² = 4603303149463922, which contains 22 as substring.

Together with 47975533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47975533) 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 as a sum of consecutive naturals, namely, 23987765 + 23987766.

It is an arithmetic number, because the mean of its divisors is an integer number (23987766).

Almost surely, 2^47975531 is an apocalyptic number.

47975531 is a deficient number, since it is larger than the sum of its proper divisors (1).

47975531 is an equidigital number, since it uses as much as digits as its factorization.

47975531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 41.

The square root of 47975531 is about 6926.4371072002. The cubic root of 47975531 is about 363.3623537313.

The spelling of 47975531 in words is "forty-seven million, nine hundred seventy-five thousand, five hundred thirty-one".