161447297 has 8 divisors (see below), whose sum is σ = 179012352. Its totient is φ = 144363600.

The previous prime is 161447269. The next prime is 161447329. The reversal of 161447297 is 792744161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161447297 - 2²⁴ = 144670081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161447207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119633 + ... + 120974.

It is an arithmetic number, because the mean of its divisors is an integer number (22376544).

Almost surely, 2^161447297 is an apocalyptic number.

It is an amenable number.

161447297 is a deficient number, since it is larger than the sum of its proper divisors (17565055).

161447297 is a wasteful number, since it uses less digits than its factorization.

161447297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240679.

The product of its digits is 84672, while the sum is 41.

The square root of 161447297 is about 12706.1912861408. The cubic root of 161447297 is about 544.5155159090.

The spelling of 161447297 in words is "one hundred sixty-one million, four hundred forty-seven thousand, two hundred ninety-seven".