47477775 has 12 divisors (see below), whose sum is σ = 78496712. Its totient is φ = 25321440.

The previous prime is 47477767. The next prime is 47477779. The reversal of 47477775 is 57777474.

It is a happy number.

47477775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47477775 - 2³ = 47477767 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 (47477779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316444 + ... + 316593.

Almost surely, 2^47477775 is an apocalyptic number.

47477775 is a deficient number, since it is larger than the sum of its proper divisors (31018937).

47477775 is a wasteful number, since it uses less digits than its factorization.

47477775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633050 (or 633045 counting only the distinct ones).

The product of its digits is 1344560, while the sum is 48.

The square root of 47477775 is about 6890.4118164301. The cubic root of 47477775 is about 362.1013294473.

The spelling of 47477775 in words is "forty-seven million, four hundred seventy-seven thousand, seven hundred seventy-five".