47538731 has 2 divisors, whose sum is σ = 47538732. Its totient is φ = 47538730.

The previous prime is 47538691. The next prime is 47538791. The reversal of 47538731 is 13783574.

47538731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47538731 is a prime.

It is a super-2 number, since 2×47538731² = 4519861890180722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47538791) 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, 23769365 + 23769366.

It is an arithmetic number, because the mean of its divisors is an integer number (23769366).

Almost surely, 2^47538731 is an apocalyptic number.

47538731 is a deficient number, since it is larger than the sum of its proper divisors (1).

47538731 is an equidigital number, since it uses as much as digits as its factorization.

47538731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 38.

The square root of 47538731 is about 6894.8336455639. The cubic root of 47538731 is about 362.2562286557.

The spelling of 47538731 in words is "forty-seven million, five hundred thirty-eight thousand, seven hundred thirty-one".