47172361 has 4 divisors (see below), whose sum is σ = 47658772. Its totient is φ = 46685952.

The previous prime is 47172347. The next prime is 47172439. The reversal of 47172361 is 16327174.

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 7733961 + 39438400 = 2781^2 + 6280^2 .

It is a cyclic number.

It is not a de Polignac number, because 47172361 - 2¹⁷ = 47041289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47172311) 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, 243060 + ... + 243253.

It is an arithmetic number, because the mean of its divisors is an integer number (11914693).

Almost surely, 2^47172361 is an apocalyptic number.

It is an amenable number.

47172361 is a deficient number, since it is larger than the sum of its proper divisors (486411).

47172361 is an equidigital number, since it uses as much as digits as its factorization.

47172361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486410.

The product of its digits is 7056, while the sum is 31.

The square root of 47172361 is about 6868.2138143771. The cubic root of 47172361 is about 361.3232193951.

The spelling of 47172361 in words is "forty-seven million, one hundred seventy-two thousand, three hundred sixty-one".