47161321 has 4 divisors (see below), whose sum is σ = 47176272. Its totient is φ = 47146372.

The previous prime is 47161319. The next prime is 47161333. The reversal of 47161321 is 12316174.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47161321 - 2¹ = 47161319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47161721) 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, 691 + ... + 9736.

It is an arithmetic number, because the mean of its divisors is an integer number (11794068).

Almost surely, 2^47161321 is an apocalyptic number.

It is an amenable number.

47161321 is a deficient number, since it is larger than the sum of its proper divisors (14951).

47161321 is a wasteful number, since it uses less digits than its factorization.

47161321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14950.

The product of its digits is 1008, while the sum is 25.

The square root of 47161321 is about 6867.4100649371. The cubic root of 47161321 is about 361.2950297272.

Adding to 47161321 its reverse (12316174), we get a palindrome (59477495).

The spelling of 47161321 in words is "forty-seven million, one hundred sixty-one thousand, three hundred twenty-one".