47123775 has 36 divisors (see below), whose sum is σ = 87541272. Its totient is φ = 25129440.

The previous prime is 47123771. The next prime is 47123827. The reversal of 47123775 is 57732174.

It is not a de Polignac number, because 47123775 - 2² = 47123771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47123771) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2197 + ... + 9953.

It is an arithmetic number, because the mean of its divisors is an integer number (2431702).

Almost surely, 2^47123775 is an apocalyptic number.

47123775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47123775 is a deficient number, since it is larger than the sum of its proper divisors (40417497).

47123775 is an equidigital number, since it uses as much as digits as its factorization.

47123775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7782 (or 7765 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 47123775 is about 6864.6758845557. The cubic root of 47123775 is about 361.1991263872.

The spelling of 47123775 in words is "forty-seven million, one hundred twenty-three thousand, seven hundred seventy-five".