47161297 has 4 divisors (see below), whose sum is σ = 47363940. Its totient is φ = 46958656.

The previous prime is 47161277. The next prime is 47161307. The reversal of 47161297 is 79216174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79216174 = 2 ⋅39608087.

It can be written as a sum of positive squares in 2 ways, for example, as 13242321 + 33918976 = 3639^2 + 5824^2 .

It is a cyclic number.

It is not a de Polignac number, because 47161297 - 2¹⁹ = 46637009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47161207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100972 + ... + 101437.

It is an arithmetic number, because the mean of its divisors is an integer number (11840985).

Almost surely, 2^47161297 is an apocalyptic number.

It is an amenable number.

47161297 is a deficient number, since it is larger than the sum of its proper divisors (202643).

47161297 is a wasteful number, since it uses less digits than its factorization.

47161297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202642.

The product of its digits is 21168, while the sum is 37.

The square root of 47161297 is about 6867.4083175533. The cubic root of 47161297 is about 361.2949684406.

The spelling of 47161297 in words is "forty-seven million, one hundred sixty-one thousand, two hundred ninety-seven".