47531837 has 2 divisors, whose sum is σ = 47531838. Its totient is φ = 47531836.

The previous prime is 47531819. The next prime is 47531857. The reversal of 47531837 is 73813574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 11363641 = 6014^2 + 3371^2 .

It is a cyclic number.

It is not a de Polignac number, because 47531837 - 2⁸ = 47531581 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47531837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47531807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23765918 + 23765919.

It is an arithmetic number, because the mean of its divisors is an integer number (23765919).

Almost surely, 2^47531837 is an apocalyptic number.

It is an amenable number.

47531837 is a deficient number, since it is larger than the sum of its proper divisors (1).

47531837 is an equidigital number, since it uses as much as digits as its factorization.

47531837 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 47531837 is about 6894.3336878918. Note that the first 3 decimals coincide. The cubic root of 47531837 is about 362.2387165127.

The spelling of 47531837 in words is "forty-seven million, five hundred thirty-one thousand, eight hundred thirty-seven".