161047753 has 4 divisors (see below), whose sum is σ = 161207748. Its totient is φ = 160887760.

The previous prime is 161047751. The next prime is 161047801. The reversal of 161047753 is 357740161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14807104 + 146240649 = 3848^2 + 12093^2 .

It is a cyclic number.

It is not a de Polignac number, because 161047753 - 2¹ = 161047751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161047751) 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 3 ways as a sum of consecutive naturals, for example, 78478 + ... + 80503.

It is an arithmetic number, because the mean of its divisors is an integer number (40301937).

Almost surely, 2^161047753 is an apocalyptic number.

It is an amenable number.

161047753 is a deficient number, since it is larger than the sum of its proper divisors (159995).

161047753 is a wasteful number, since it uses less digits than its factorization.

161047753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159994.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 161047753 is about 12690.4591327501. The cubic root of 161047753 is about 544.0659623464.

The spelling of 161047753 in words is "one hundred sixty-one million, forty-seven thousand, seven hundred fifty-three".