165032977 has 4 divisors (see below), whose sum is σ = 165897216. Its totient is φ = 164168740.

The previous prime is 165032951. The next prime is 165033019. The reversal of 165032977 is 779230561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165032977 - 2⁷ = 165032849 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165032947) 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, 431833 + ... + 432214.

It is an arithmetic number, because the mean of its divisors is an integer number (41474304).

Almost surely, 2^165032977 is an apocalyptic number.

It is an amenable number.

165032977 is a deficient number, since it is larger than the sum of its proper divisors (864239).

165032977 is an equidigital number, since it uses as much as digits as its factorization.

165032977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864238.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 165032977 is about 12846.5161425190. The cubic root of 165032977 is about 548.5171927013.

The spelling of 165032977 in words is "one hundred sixty-five million, thirty-two thousand, nine hundred seventy-seven".