47955631 has 2 divisors, whose sum is σ = 47955632. Its totient is φ = 47955630.

The previous prime is 47955629. The next prime is 47955641. The reversal of 47955631 is 13655974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47955631 - 2¹ = 47955629 is a prime.

It is a super-2 number, since 2×47955631² = 4599485089216322, which contains 22 as substring.

Together with 47955629, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47955641) 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, 23977815 + 23977816.

It is an arithmetic number, because the mean of its divisors is an integer number (23977816).

Almost surely, 2^47955631 is an apocalyptic number.

47955631 is a deficient number, since it is larger than the sum of its proper divisors (1).

47955631 is an equidigital number, since it uses as much as digits as its factorization.

47955631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 47955631 is about 6925.0004332130. Note that the first 3 decimals coincide. The cubic root of 47955631 is about 363.3121065136.

The spelling of 47955631 in words is "forty-seven million, nine hundred fifty-five thousand, six hundred thirty-one".