165087955 has 4 divisors (see below), whose sum is σ = 198105552. Its totient is φ = 132070360.

The previous prime is 165087943. The next prime is 165087973. The reversal of 165087955 is 559780561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 165087955 - 2¹⁹ = 164563667 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16508791 + ... + 16508800.

It is an arithmetic number, because the mean of its divisors is an integer number (49526388).

Almost surely, 2^165087955 is an apocalyptic number.

165087955 is a deficient number, since it is larger than the sum of its proper divisors (33017597).

165087955 is an equidigital number, since it uses as much as digits as its factorization.

165087955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33017596.

The product of its (nonzero) digits is 378000, while the sum is 46.

The square root of 165087955 is about 12848.6557662660. The cubic root of 165087955 is about 548.5780957416.

The spelling of 165087955 in words is "one hundred sixty-five million, eighty-seven thousand, nine hundred fifty-five".