165572049 has 16 divisors (see below), whose sum is σ = 229017600. Its totient is φ = 106275456.

The previous prime is 165572021. The next prime is 165572081. The reversal of 165572049 is 940275561.

165572049 = 1661² + 1662² + ... + 1718².

It is not a de Polignac number, because 165572049 - 2⁹ = 165571537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165571998 and 165572016.

It is not an unprimeable number, because it can be changed into a prime (165576049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30837 + ... + 35805.

It is an arithmetic number, because the mean of its divisors is an integer number (14313600).

Almost surely, 2^165572049 is an apocalyptic number.

It is an amenable number.

165572049 is a deficient number, since it is larger than the sum of its proper divisors (63445551).

165572049 is a wasteful number, since it uses less digits than its factorization.

165572049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 165572049 is about 12867.4802894739. The cubic root of 165572049 is about 549.1137782968.

The spelling of 165572049 in words is "one hundred sixty-five million, five hundred seventy-two thousand, forty-nine".