26161061 has 4 divisors (see below), whose sum is σ = 26179500. Its totient is φ = 26142624.

The previous prime is 26161049. The next prime is 26161063. The reversal of 26161061 is 16016162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16016162 = 2 ⋅8008081.

It can be written as a sum of positive squares in 2 ways, for example, as 4024036 + 22137025 = 2006^2 + 4705^2 .

It is a cyclic number.

It is not a de Polignac number, because 26161061 - 2²² = 21966757 is a prime.

It is a super-2 number, since 2×26161061² = 1368802225291442, 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 (26161063) 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, 6896 + ... + 9993.

It is an arithmetic number, because the mean of its divisors is an integer number (6544875).

Almost surely, 2^26161061 is an apocalyptic number.

It is an amenable number.

26161061 is a deficient number, since it is larger than the sum of its proper divisors (18439).

26161061 is a wasteful number, since it uses less digits than its factorization.

26161061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18438.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 26161061 is about 5114.7884609239. The cubic root of 26161061 is about 296.8600692916.

The spelling of 26161061 in words is "twenty-six million, one hundred sixty-one thousand, sixty-one".