161422481 has 8 divisors (see below), whose sum is σ = 176464704. Its totient is φ = 146441520.

The previous prime is 161422451. The next prime is 161422483. The reversal of 161422481 is 184224161.

161422481 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 161422481 - 2¹⁰ = 161421457 is a prime.

It is a super-2 number, since 2×161422481² = 52114434744390722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161422483) 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, 9710 + ... + 20423.

It is an arithmetic number, because the mean of its divisors is an integer number (22058088).

Almost surely, 2^161422481 is an apocalyptic number.

161422481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161422481 is a deficient number, since it is larger than the sum of its proper divisors (15042223).

161422481 is a wasteful number, since it uses less digits than its factorization.

161422481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30631.

The product of its digits is 3072, while the sum is 29.

The square root of 161422481 is about 12705.2147168003. The cubic root of 161422481 is about 544.4876153914.

The spelling of 161422481 in words is "one hundred sixty-one million, four hundred twenty-two thousand, four hundred eighty-one".