26129161 has 4 divisors (see below), whose sum is σ = 27504400. Its totient is φ = 24753924.

The previous prime is 26129113. The next prime is 26129183. The reversal of 26129161 is 16192162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26129161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26129101) 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, 687591 + ... + 687628.

It is an arithmetic number, because the mean of its divisors is an integer number (6876100).

Almost surely, 2^26129161 is an apocalyptic number.

It is an amenable number.

26129161 is a deficient number, since it is larger than the sum of its proper divisors (1375239).

26129161 is a wasteful number, since it uses less digits than its factorization.

26129161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375238.

The product of its digits is 1296, while the sum is 28.

The square root of 26129161 is about 5111.6691011841. The cubic root of 26129161 is about 296.7393595098.

The spelling of 26129161 in words is "twenty-six million, one hundred twenty-nine thousand, one hundred sixty-one".