165455407 has 16 divisors (see below), whose sum is σ = 189235872. Its totient is φ = 143308800.

The previous prime is 165455393. The next prime is 165455413. The reversal of 165455407 is 704554561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 165455407 - 2²³ = 157066799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165455447) 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, 87688 + ... + 89554.

It is an arithmetic number, because the mean of its divisors is an integer number (11827242).

Almost surely, 2^165455407 is an apocalyptic number.

165455407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

165455407 is a deficient number, since it is larger than the sum of its proper divisors (23780465).

165455407 is a wasteful number, since it uses less digits than its factorization.

165455407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 165455407 is about 12862.9470573427. The cubic root of 165455407 is about 548.9848016646.

It can be divided in two parts, 16545 and 5407, that added together give a cube (21952 = 28³).

The spelling of 165455407 in words is "one hundred sixty-five million, four hundred fifty-five thousand, four hundred seven".