161481127 has 4 divisors (see below), whose sum is σ = 161659296. Its totient is φ = 161302960.

The previous prime is 161481121. The next prime is 161481149. The reversal of 161481127 is 721184161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161481127 - 2³ = 161481119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161481121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87718 + ... + 89539.

It is an arithmetic number, because the mean of its divisors is an integer number (40414824).

Almost surely, 2^161481127 is an apocalyptic number.

161481127 is a deficient number, since it is larger than the sum of its proper divisors (178169).

161481127 is an equidigital number, since it uses as much as digits as its factorization.

161481127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178168.

The product of its digits is 2688, while the sum is 31.

The square root of 161481127 is about 12707.5224571905. The cubic root of 161481127 is about 544.5535462214.

The spelling of 161481127 in words is "one hundred sixty-one million, four hundred eighty-one thousand, one hundred twenty-seven".