47455717 has 2 divisors, whose sum is σ = 47455718. Its totient is φ = 47455716.

The previous prime is 47455663. The next prime is 47455747. The reversal of 47455717 is 71755474.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43020481 + 4435236 = 6559^2 + 2106^2 .

It is a cyclic number.

It is not a de Polignac number, because 47455717 - 2⁷ = 47455589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47455717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47455747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23727858 + 23727859.

It is an arithmetic number, because the mean of its divisors is an integer number (23727859).

Almost surely, 2^47455717 is an apocalyptic number.

It is an amenable number.

47455717 is a deficient number, since it is larger than the sum of its proper divisors (1).

47455717 is an equidigital number, since it uses as much as digits as its factorization.

47455717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137200, while the sum is 40.

The square root of 47455717 is about 6888.8110004557. The cubic root of 47455717 is about 362.0452437778.

The spelling of 47455717 in words is "forty-seven million, four hundred fifty-five thousand, seven hundred seventeen".