26151431 has 2 divisors, whose sum is σ = 26151432. Its totient is φ = 26151430.

The previous prime is 26151427. The next prime is 26151443. The reversal of 26151431 is 13415162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26151431 - 2² = 26151427 is a prime.

It is a super-2 number, since 2×26151431² = 1367794686695522, which contains 22 as substring.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 26151397 and 26151406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26151451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13075715 + 13075716.

It is an arithmetic number, because the mean of its divisors is an integer number (13075716).

Almost surely, 2^26151431 is an apocalyptic number.

26151431 is a deficient number, since it is larger than the sum of its proper divisors (1).

26151431 is an equidigital number, since it uses as much as digits as its factorization.

26151431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 26151431 is about 5113.8469863695. The cubic root of 26151431 is about 296.8236396616.

Adding to 26151431 its reverse (13415162), we get a palindrome (39566593).

The spelling of 26151431 in words is "twenty-six million, one hundred fifty-one thousand, four hundred thirty-one".