161005097 has 8 divisors (see below), whose sum is σ = 176398560. Its totient is φ = 145737760.

The previous prime is 161005049. The next prime is 161005133. The reversal of 161005097 is 790500161.

It is a happy number.

161005097 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 161005097 - 2²² = 156810793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161005007) 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, 28847 + ... + 33972.

It is an arithmetic number, because the mean of its divisors is an integer number (22049820).

Almost surely, 2^161005097 is an apocalyptic number.

It is an amenable number.

161005097 is a deficient number, since it is larger than the sum of its proper divisors (15393463).

161005097 is a wasteful number, since it uses less digits than its factorization.

161005097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63063.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 161005097 is about 12688.7783887969. The cubic root of 161005097 is about 544.0179233300.

The spelling of 161005097 in words is "one hundred sixty-one million, five thousand, ninety-seven".