16161701 has 4 divisors (see below), whose sum is σ = 16229004. Its totient is φ = 16094400.

The previous prime is 16161653. The next prime is 16161727. The reversal of 16161701 is 10716161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10716161 = 1619 ⋅6619.

It can be written as a sum of positive squares in 2 ways, for example, as 8844676 + 7317025 = 2974^2 + 2705^2 .

It is a cyclic number.

It is not a de Polignac number, because 16161701 - 2¹⁴ = 16145317 is a prime.

It is a super-2 number, since 2×16161701² = 522401158426802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161751) 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, 33290 + ... + 33771.

It is an arithmetic number, because the mean of its divisors is an integer number (4057251).

Almost surely, 2^16161701 is an apocalyptic number.

It is an amenable number.

16161701 is a deficient number, since it is larger than the sum of its proper divisors (67303).

16161701 is an equidigital number, since it uses as much as digits as its factorization.

16161701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67302.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 16161701 is about 4020.1618126638. The cubic root of 16161701 is about 252.8302433123.

Adding to 16161701 its reverse (10716161), we get a palindrome (26877862).

The spelling of 16161701 in words is "sixteen million, one hundred sixty-one thousand, seven hundred one".