161057713 has 4 divisors (see below), whose sum is σ = 161098740. Its totient is φ = 161016688.

The previous prime is 161057681. The next prime is 161057719. The reversal of 161057713 is 317750161.

161057713 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.

It can be written as a sum of positive squares in 2 ways, for example, as 120824064 + 40233649 = 10992^2 + 6343^2 .

It is a cyclic number.

It is not a de Polignac number, because 161057713 - 2⁵ = 161057681 is a prime.

It is a super-3 number, since 3×161057713³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161057719) 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, 13918 + ... + 22711.

It is an arithmetic number, because the mean of its divisors is an integer number (40274685).

Almost surely, 2^161057713 is an apocalyptic number.

It is an amenable number.

161057713 is a deficient number, since it is larger than the sum of its proper divisors (41027).

161057713 is an equidigital number, since it uses as much as digits as its factorization.

161057713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41026.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 161057713 is about 12690.8515474731. The cubic root of 161057713 is about 544.0771780369.

The spelling of 161057713 in words is "one hundred sixty-one million, fifty-seven thousand, seven hundred thirteen".