161648455 has 8 divisors (see below), whose sum is σ = 194256000. Its totient is φ = 129133536.

The previous prime is 161648441. The next prime is 161648467. The reversal of 161648455 is 554846161.

161648455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161648455 - 2¹⁹ = 161124167 is a prime.

It is a super-2 number, since 2×161648455² = 52260446007774050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19255 + ... + 26344.

It is an arithmetic number, because the mean of its divisors is an integer number (24282000).

Almost surely, 2^161648455 is an apocalyptic number.

161648455 is a deficient number, since it is larger than the sum of its proper divisors (32607545).

161648455 is an equidigital number, since it uses as much as digits as its factorization.

161648455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46313.

The product of its digits is 115200, while the sum is 40.

The square root of 161648455 is about 12714.1045693356. The cubic root of 161648455 is about 544.7415714988.

The spelling of 161648455 in words is "one hundred sixty-one million, six hundred forty-eight thousand, four hundred fifty-five".