47491237 has 2 divisors, whose sum is σ = 47491238. Its totient is φ = 47491236.

The previous prime is 47491231. The next prime is 47491253. The reversal of 47491237 is 73219474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47141956 + 349281 = 6866^2 + 591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47491237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47491196 and 47491205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47491231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23745618 + 23745619.

It is an arithmetic number, because the mean of its divisors is an integer number (23745619).

Almost surely, 2^47491237 is an apocalyptic number.

It is an amenable number.

47491237 is a deficient number, since it is larger than the sum of its proper divisors (1).

47491237 is an equidigital number, since it uses as much as digits as its factorization.

47491237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 47491237 is about 6891.3886118837. The cubic root of 47491237 is about 362.1355500024.

The spelling of 47491237 in words is "forty-seven million, four hundred ninety-one thousand, two hundred thirty-seven".