47365561 has 4 divisors (see below), whose sum is σ = 47380212. Its totient is φ = 47350912.

The previous prime is 47365547. The next prime is 47365573. The reversal of 47365561 is 16556374.

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 13213225 + 34152336 = 3635^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 47365561 - 2⁷ = 47365433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47365561.

It is not an unprimeable number, because it can be changed into a prime (47365531) 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, 100 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (11845053).

Almost surely, 2^47365561 is an apocalyptic number.

It is an amenable number.

47365561 is a deficient number, since it is larger than the sum of its proper divisors (14651).

47365561 is an equidigital number, since it uses as much as digits as its factorization.

47365561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14650.

The product of its digits is 75600, while the sum is 37.

The square root of 47365561 is about 6882.2642349738. The cubic root of 47365561 is about 361.8158281950.

The spelling of 47365561 in words is "forty-seven million, three hundred sixty-five thousand, five hundred sixty-one".