26149901 has 2 divisors, whose sum is σ = 26149902. Its totient is φ = 26149900.

The previous prime is 26149889. The next prime is 26149951. The reversal of 26149901 is 10994162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18913801 + 7236100 = 4349^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 26149901 - 2¹⁰ = 26148877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26149951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13074950 + 13074951.

It is an arithmetic number, because the mean of its divisors is an integer number (13074951).

Almost surely, 2^26149901 is an apocalyptic number.

It is an amenable number.

26149901 is a deficient number, since it is larger than the sum of its proper divisors (1).

26149901 is an equidigital number, since it uses as much as digits as its factorization.

26149901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 26149901 is about 5113.6973903429. The cubic root of 26149901 is about 296.8178509532.

The spelling of 26149901 in words is "twenty-six million, one hundred forty-nine thousand, nine hundred one".