47564775 has 36 divisors (see below), whose sum is σ = 85742280. Its totient is φ = 25204800.

The previous prime is 47564761. The next prime is 47564791. The reversal of 47564775 is 57746574.

It is not a de Polignac number, because 47564775 - 2⁵ = 47564743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 47564775.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39685 + ... + 40865.

It is an arithmetic number, because the mean of its divisors is an integer number (2381730).

Almost surely, 2^47564775 is an apocalyptic number.

47564775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47564775 is a deficient number, since it is larger than the sum of its proper divisors (38177505).

47564775 is a wasteful number, since it uses less digits than its factorization.

47564775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376 (or 1368 counting only the distinct ones).

The product of its digits is 823200, while the sum is 45.

The square root of 47564775 is about 6896.7220474657. The cubic root of 47564775 is about 362.3223703654.

The spelling of 47564775 in words is "forty-seven million, five hundred sixty-four thousand, seven hundred seventy-five".