26151971 has 2 divisors, whose sum is σ = 26151972. Its totient is φ = 26151970.

The previous prime is 26151959. The next prime is 26151991. The reversal of 26151971 is 17915162.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26151971 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (26151991) 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, 13075985 + 13075986.

It is an arithmetic number, because the mean of its divisors is an integer number (13075986).

Almost surely, 2^26151971 is an apocalyptic number.

26151971 is a deficient number, since it is larger than the sum of its proper divisors (1).

26151971 is an equidigital number, since it uses as much as digits as its factorization.

26151971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 32.

The square root of 26151971 is about 5113.8997839222. The cubic root of 26151971 is about 296.8256826813.

The spelling of 26151971 in words is "twenty-six million, one hundred fifty-one thousand, nine hundred seventy-one".