47799775 has 6 divisors (see below), whose sum is σ = 59271752. Its totient is φ = 38239800.

The previous prime is 47799769. The next prime is 47799779. The reversal of 47799775 is 57799774.

It is not a de Polignac number, because 47799775 - 2²¹ = 45702623 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 (47799779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 955971 + ... + 956020.

Almost surely, 2^47799775 is an apocalyptic number.

47799775 is a deficient number, since it is larger than the sum of its proper divisors (11471977).

47799775 is a wasteful number, since it uses less digits than its factorization.

47799775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912001 (or 1911996 counting only the distinct ones).

The product of its digits is 3889620, while the sum is 55.

The square root of 47799775 is about 6913.7381350468. The cubic root of 47799775 is about 362.9180907353.

Subtracting 47799775 from its reverse (57799774), we obtain a palindrome (9999999).

The spelling of 47799775 in words is "forty-seven million, seven hundred ninety-nine thousand, seven hundred seventy-five".