165037457 has 6 divisors (see below), whose sum is σ = 178709382. Its totient is φ = 152342112.

The previous prime is 165037421. The next prime is 165037469. The reversal of 165037457 is 754730561.

It can be written as a sum of positive squares in 3 ways, for example, as 13845841 + 151191616 = 3721^2 + 12296^2 .

It is not a de Polignac number, because 165037457 - 2¹⁰ = 165036433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165037457.

It is not an unprimeable number, because it can be changed into a prime (165031457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 488108 + ... + 488445.

It is an arithmetic number, because the mean of its divisors is an integer number (29784897).

Almost surely, 2^165037457 is an apocalyptic number.

It is an amenable number.

165037457 is a deficient number, since it is larger than the sum of its proper divisors (13671925).

165037457 is an equidigital number, since it uses as much as digits as its factorization.

165037457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976579 (or 976566 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 165037457 is about 12846.6905076755. The cubic root of 165037457 is about 548.5221560220.

The spelling of 165037457 in words is "one hundred sixty-five million, thirty-seven thousand, four hundred fifty-seven".