47731775 has 24 divisors (see below), whose sum is σ = 72849504. Its totient is φ = 30211200.

The previous prime is 47731771. The next prime is 47731793. The reversal of 47731775 is 57713774.

It is not a de Polignac number, because 47731775 - 2² = 47731771 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47731771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8216 + ... + 12765.

It is an arithmetic number, because the mean of its divisors is an integer number (3035396).

Almost surely, 2^47731775 is an apocalyptic number.

47731775 is a deficient number, since it is larger than the sum of its proper divisors (25117729).

47731775 is a wasteful number, since it uses less digits than its factorization.

47731775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21011 (or 21006 counting only the distinct ones).

The product of its digits is 144060, while the sum is 41.

The square root of 47731775 is about 6908.8186399702. The cubic root of 47731775 is about 362.7459132028.

The spelling of 47731775 in words is "forty-seven million, seven hundred thirty-one thousand, seven hundred seventy-five".