161560701 has 6 divisors (see below), whose sum is σ = 233365470. Its totient is φ = 107707128.

The previous prime is 161560699. The next prime is 161560723. The reversal of 161560701 is 107065161.

161560701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 160047801 + 1512900 = 12651^2 + 1230^2 .

It is not a de Polignac number, because 161560701 - 2¹ = 161560699 is a prime.

It is a super-2 number, since 2×161560701² = 52203720215222802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161560501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8975586 + ... + 8975603.

It is an arithmetic number, because the mean of its divisors is an integer number (38894245).

Almost surely, 2^161560701 is an apocalyptic number.

It is an amenable number.

161560701 is a deficient number, since it is larger than the sum of its proper divisors (71804769).

161560701 is a wasteful number, since it uses less digits than its factorization.

161560701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17951195 (or 17951192 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 161560701 is about 12710.6530516728. The cubic root of 161560701 is about 544.6429791455.

It can be divided in two parts, 161560 and 701, that added together give a palindrome (162261).

The spelling of 161560701 in words is "one hundred sixty-one million, five hundred sixty thousand, seven hundred one".