47685137 has 2 divisors, whose sum is σ = 47685138. Its totient is φ = 47685136.

The previous prime is 47685101. The next prime is 47685149. The reversal of 47685137 is 73158674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47554816 + 130321 = 6896^2 + 361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47685137 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47685094 and 47685103.

It is not a weakly prime, because it can be changed into another prime (47685167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23842568 + 23842569.

It is an arithmetic number, because the mean of its divisors is an integer number (23842569).

Almost surely, 2^47685137 is an apocalyptic number.

It is an amenable number.

47685137 is a deficient number, since it is larger than the sum of its proper divisors (1).

47685137 is an equidigital number, since it uses as much as digits as its factorization.

47685137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 47685137 is about 6905.4425636595. The cubic root of 47685137 is about 362.6277301761.

The spelling of 47685137 in words is "forty-seven million, six hundred eighty-five thousand, one hundred thirty-seven".