165210453 has 24 divisors (see below), whose sum is σ = 251846400. Its totient is φ = 104073984.

The previous prime is 165210431. The next prime is 165210457. The reversal of 165210453 is 354012561.

165210453 is a `hidden beast` number, since 1 + 652 + 1 + 0 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 165210453 - 2⁶ = 165210389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165210457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80901 + ... + 82917.

It is an arithmetic number, because the mean of its divisors is an integer number (10493600).

Almost surely, 2^165210453 is an apocalyptic number.

It is an amenable number.

165210453 is a deficient number, since it is larger than the sum of its proper divisors (86635947).

165210453 is a wasteful number, since it uses less digits than its factorization.

165210453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2518 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 165210453 is about 12853.4218401171. The cubic root of 165210453 is about 548.7137468764.

The spelling of 165210453 in words is "one hundred sixty-five million, two hundred ten thousand, four hundred fifty-three".