47666455 has 4 divisors (see below), whose sum is σ = 57199752. Its totient is φ = 38133160.

The previous prime is 47666449. The next prime is 47666483. The reversal of 47666455 is 55466674.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-47666455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4766641 + ... + 4766650.

It is an arithmetic number, because the mean of its divisors is an integer number (14299938).

Almost surely, 2^47666455 is an apocalyptic number.

47666455 is a deficient number, since it is larger than the sum of its proper divisors (9533297).

47666455 is an equidigital number, since it uses as much as digits as its factorization.

47666455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9533296.

The product of its digits is 604800, while the sum is 43.

The square root of 47666455 is about 6904.0897300079. The cubic root of 47666455 is about 362.5803674366.

The spelling of 47666455 in words is "forty-seven million, six hundred sixty-six thousand, four hundred fifty-five".