47445631 has 2 divisors, whose sum is σ = 47445632. Its totient is φ = 47445630.

The previous prime is 47445613. The next prime is 47445667. The reversal of 47445631 is 13654474.

Together with previous prime (47445613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47445631 - 2⁵ = 47445599 is a prime.

It is a super-2 number, since 2×47445631² = 4502175801976322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47445031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23722815 + 23722816.

It is an arithmetic number, because the mean of its divisors is an integer number (23722816).

Almost surely, 2^47445631 is an apocalyptic number.

47445631 is a deficient number, since it is larger than the sum of its proper divisors (1).

47445631 is an equidigital number, since it uses as much as digits as its factorization.

47445631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 47445631 is about 6888.0789048907. The cubic root of 47445631 is about 362.0195928673.

The spelling of 47445631 in words is "forty-seven million, four hundred forty-five thousand, six hundred thirty-one".