47251663 has 4 divisors (see below), whose sum is σ = 47524968. Its totient is φ = 46978360.

The previous prime is 47251649. The next prime is 47251667. The reversal of 47251663 is 36615274.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47251663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47251667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136393 + ... + 136738.

It is an arithmetic number, because the mean of its divisors is an integer number (11881242).

Almost surely, 2^47251663 is an apocalyptic number.

47251663 is a deficient number, since it is larger than the sum of its proper divisors (273305).

47251663 is a wasteful number, since it uses less digits than its factorization.

47251663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273304.

The product of its digits is 30240, while the sum is 34.

The square root of 47251663 is about 6873.9845068199. The cubic root of 47251663 is about 361.5255809168.

The spelling of 47251663 in words is "forty-seven million, two hundred fifty-one thousand, six hundred sixty-three".