47089531 has 2 divisors, whose sum is σ = 47089532. Its totient is φ = 47089530.

The previous prime is 47089529. The next prime is 47089583. The reversal of 47089531 is 13598074.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47089531 - 2¹ = 47089529 is a prime.

It is a super-2 number, since 2×47089531² = 4434847859599922, which contains 22 as substring.

Together with 47089529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47089631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23544765 + 23544766.

It is an arithmetic number, because the mean of its divisors is an integer number (23544766).

Almost surely, 2^47089531 is an apocalyptic number.

47089531 is a deficient number, since it is larger than the sum of its proper divisors (1).

47089531 is an equidigital number, since it uses as much as digits as its factorization.

47089531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 47089531 is about 6862.1812129963. The cubic root of 47089531 is about 361.1116128821. Note that the first 3 decimals are identical.

The spelling of 47089531 in words is "forty-seven million, eighty-nine thousand, five hundred thirty-one".