47661305 has 4 divisors (see below), whose sum is σ = 57193572. Its totient is φ = 38129040.

The previous prime is 47661287. The next prime is 47661307. The reversal of 47661305 is 50316674.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21641104 + 26020201 = 4652^2 + 5101^2 .

It is not a de Polignac number, because 47661305 - 2⁸ = 47661049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47661307) 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, 4766126 + ... + 4766135.

It is an arithmetic number, because the mean of its divisors is an integer number (14298393).

Almost surely, 2^47661305 is an apocalyptic number.

It is an amenable number.

47661305 is a deficient number, since it is larger than the sum of its proper divisors (9532267).

47661305 is an equidigital number, since it uses as much as digits as its factorization.

47661305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532266.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 47661305 is about 6903.7167525906. The cubic root of 47661305 is about 362.5673089440.

Adding to 47661305 its reverse (50316674), we get a palindrome (97977979).

The spelling of 47661305 in words is "forty-seven million, six hundred sixty-one thousand, three hundred five".