161026471 has 4 divisors (see below), whose sum is σ = 161608072. Its totient is φ = 160444872.

The previous prime is 161026451. The next prime is 161026583. The reversal of 161026471 is 174620161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174620161 = 73 ⋅2392057.

It is a cyclic number.

It is not a de Polignac number, because 161026471 - 2⁷ = 161026343 is a prime.

It is a super-3 number, since 3×161026471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161026451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290385 + ... + 290938.

It is an arithmetic number, because the mean of its divisors is an integer number (40402018).

Almost surely, 2^161026471 is an apocalyptic number.

161026471 is a deficient number, since it is larger than the sum of its proper divisors (581601).

161026471 is an equidigital number, since it uses as much as digits as its factorization.

161026471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581600.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 161026471 is about 12689.6206011055. The cubic root of 161026471 is about 544.0419957037.

The spelling of 161026471 in words is "one hundred sixty-one million, twenty-six thousand, four hundred seventy-one".