47227547761 has 3 divisors (see below), whose sum is σ = 47227765081. Its totient is φ = 47227330442.

The previous prime is 47227547723. The next prime is 47227547777. The reversal of 47227547761 is 16774572274.

The square root of 47227547761 is 217319.

It is a perfect power (a square), and thus also a powerful 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 is not a de Polignac number, because 47227547761 - 2¹⁵ = 47227514993 is a prime.

It is a super-2 number, since 2×47227547761² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47227547699 and 47227547708.

It is not an unprimeable number, because it can be changed into a prime (47227547261) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 108660 + ... + 325978.

Almost surely, 2^47227547761 is an apocalyptic number.

47227547761 is the 217319-th square number.

47227547761 is the 108660-th centered octagonal number.

It is an amenable number.

47227547761 is a deficient number, since it is larger than the sum of its proper divisors (217320).

47227547761 is an frugal number, since it uses more digits than its factorization.

47227547761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434638 (or 217319 counting only the distinct ones).

The product of its digits is 4609920, while the sum is 52.

The spelling of 47227547761 in words is "forty-seven billion, two hundred twenty-seven million, five hundred forty-seven thousand, seven hundred sixty-one".