161655097 has 8 divisors (see below), whose sum is σ = 170280000. Its totient is φ = 153041904.

The previous prime is 161655089. The next prime is 161655107. The reversal of 161655097 is 790556161.

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 161655097 - 2³ = 161655089 is a prime.

It is a super-2 number, since 2×161655097² = 52264740772158818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161655007) 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 7 ways as a sum of consecutive naturals, for example, 52404 + ... + 55402.

It is an arithmetic number, because the mean of its divisors is an integer number (21285000).

Almost surely, 2^161655097 is an apocalyptic number.

It is an amenable number.

161655097 is a deficient number, since it is larger than the sum of its proper divisors (8624903).

161655097 is a wasteful number, since it uses less digits than its factorization.

161655097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 161655097 is about 12714.3657726211. The cubic root of 161655097 is about 544.7490323887.

The spelling of 161655097 in words is "one hundred sixty-one million, six hundred fifty-five thousand, ninety-seven".