165254413 has 4 divisors (see below), whose sum is σ = 165371968. Its totient is φ = 165136860.

The previous prime is 165254393. The next prime is 165254431. The reversal of 165254413 is 314452561.

It is a happy number.

165254413 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314452561 = 31 ⋅10143631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165254413 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 (165254443) 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, 56643 + ... + 59488.

It is an arithmetic number, because the mean of its divisors is an integer number (41342992).

Almost surely, 2^165254413 is an apocalyptic number.

It is an amenable number.

165254413 is a deficient number, since it is larger than the sum of its proper divisors (117555).

165254413 is a wasteful number, since it uses less digits than its factorization.

165254413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117554.

The product of its digits is 14400, while the sum is 31.

The square root of 165254413 is about 12855.1317768431. The cubic root of 165254413 is about 548.7624107003.

It can be divided in two parts, 1652 and 54413, that added together give a palindrome (56065).

The spelling of 165254413 in words is "one hundred sixty-five million, two hundred fifty-four thousand, four hundred thirteen".