47180561 has 4 divisors (see below), whose sum is σ = 47194932. Its totient is φ = 47166192.

The previous prime is 47180533. The next prime is 47180563. The reversal of 47180561 is 16508174.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 26204161 + 20976400 = 5119^2 + 4580^2 .

It is a cyclic number.

It is not a de Polignac number, because 47180561 - 2¹⁴ = 47164177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47180563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431 + ... + 9723.

It is an arithmetic number, because the mean of its divisors is an integer number (11798733).

Almost surely, 2^47180561 is an apocalyptic number.

It is an amenable number.

47180561 is a deficient number, since it is larger than the sum of its proper divisors (14371).

47180561 is an equidigital number, since it uses as much as digits as its factorization.

47180561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14370.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 47180561 is about 6868.8107413147. The cubic root of 47180561 is about 361.3441545266.

The spelling of 47180561 in words is "forty-seven million, one hundred eighty thousand, five hundred sixty-one".