165656153 has 16 divisors (see below), whose sum is σ = 183617280. Its totient is φ = 148492416.

The previous prime is 165656147. The next prime is 165656159. The reversal of 165656153 is 351656561.

It is an interprime number because it is at equal distance from previous prime (165656147) and next prime (165656159).

It is a cyclic number.

It is not a de Polignac number, because 165656153 - 2⁴ = 165656137 is a prime.

It is a super-2 number, since 2×165656153² = 54883922053518818, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165656159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82718 + ... + 84696.

It is an arithmetic number, because the mean of its divisors is an integer number (11476080).

Almost surely, 2^165656153 is an apocalyptic number.

165656153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

165656153 is a deficient number, since it is larger than the sum of its proper divisors (17961127).

165656153 is a wasteful number, since it uses less digits than its factorization.

165656153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176.

The product of its digits is 81000, while the sum is 38.

The square root of 165656153 is about 12870.7479580637. The cubic root of 165656153 is about 549.2067385278.

The spelling of 165656153 in words is "one hundred sixty-five million, six hundred fifty-six thousand, one hundred fifty-three".