165280461 has 16 divisors (see below), whose sum is σ = 230830080. Its totient is φ = 104995440.

The previous prime is 165280459. The next prime is 165280463. The reversal of 165280461 is 164082561.

It is an interprime number because it is at equal distance from previous prime (165280459) and next prime (165280463).

It is not a de Polignac number, because 165280461 - 2¹ = 165280459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165280463) 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, 14280 + ... + 23118.

It is an arithmetic number, because the mean of its divisors is an integer number (14426880).

Almost surely, 2^165280461 is an apocalyptic number.

It is an amenable number.

165280461 is a deficient number, since it is larger than the sum of its proper divisors (65549619).

165280461 is a wasteful number, since it uses less digits than its factorization.

165280461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9136.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 165280461 is about 12856.1448731725. The cubic root of 165280461 is about 548.7912418261.

The spelling of 165280461 in words is "one hundred sixty-five million, two hundred eighty thousand, four hundred sixty-one".