20165097 has 8 divisors (see below), whose sum is σ = 27754240. Its totient is φ = 13009680.

The previous prime is 20165081. The next prime is 20165129. The reversal of 20165097 is 79056102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20165097 - 2⁴ = 20165081 is a prime.

It is a super-2 number, since 2×20165097² = 813262274038818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20165017) 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, 108322 + ... + 108507.

It is an arithmetic number, because the mean of its divisors is an integer number (3469280).

Almost surely, 2^20165097 is an apocalyptic number.

It is an amenable number.

20165097 is a deficient number, since it is larger than the sum of its proper divisors (7589143).

20165097 is a wasteful number, since it uses less digits than its factorization.

20165097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216863.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 20165097 is about 4490.5564243198. The cubic root of 20165097 is about 272.1866195159.

The spelling of 20165097 in words is "twenty million, one hundred sixty-five thousand, ninety-seven".