165545054 has 4 divisors (see below), whose sum is σ = 248317584. Its totient is φ = 82772526.

The previous prime is 165545011. The next prime is 165545059. The reversal of 165545054 is 450545561.

165545054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450545561 = 73 ⋅6171857.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165545059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41386262 + ... + 41386265.

It is an arithmetic number, because the mean of its divisors is an integer number (62079396).

Almost surely, 2^165545054 is an apocalyptic number.

165545054 is a deficient number, since it is larger than the sum of its proper divisors (82772530).

165545054 is an equidigital number, since it uses as much as digits as its factorization.

165545054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82772529.

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 165545054 is about 12866.4312845482. The cubic root of 165545054 is about 549.0839340241.

The spelling of 165545054 in words is "one hundred sixty-five million, five hundred forty-five thousand, fifty-four".