26161403 has 12 divisors (see below), whose sum is σ = 27292320. Its totient is φ = 25072320.

The previous prime is 26161397. The next prime is 26161411. The reversal of 26161403 is 30416162.

It is a happy number.

It is not a de Polignac number, because 26161403 - 2¹⁸ = 25899259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26161433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132701 + ... + 132897.

It is an arithmetic number, because the mean of its divisors is an integer number (2274360).

Almost surely, 2^26161403 is an apocalyptic number.

26161403 is a deficient number, since it is larger than the sum of its proper divisors (1130917).

26161403 is an equidigital number, since it uses as much as digits as its factorization.

26161403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 26161403 is about 5114.8218932823. The cubic root of 26161403 is about 296.8613628897.

Adding to 26161403 its reverse (30416162), we get a palindrome (56577565).

The spelling of 26161403 in words is "twenty-six million, one hundred sixty-one thousand, four hundred three".