26155901 has 2 divisors, whose sum is σ = 26155902. Its totient is φ = 26155900.

The previous prime is 26155897. The next prime is 26155931. The reversal of 26155901 is 10955162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13912900 + 12243001 = 3730^2 + 3499^2 .

It is a cyclic number.

It is not a de Polignac number, because 26155901 - 2² = 26155897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26155931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13077950 + 13077951.

It is an arithmetic number, because the mean of its divisors is an integer number (13077951).

Almost surely, 2^26155901 is an apocalyptic number.

It is an amenable number.

26155901 is a deficient number, since it is larger than the sum of its proper divisors (1).

26155901 is an equidigital number, since it uses as much as digits as its factorization.

26155901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 26155901 is about 5114.2840163605. The cubic root of 26155901 is about 296.8405504772.

The spelling of 26155901 in words is "twenty-six million, one hundred fifty-five thousand, nine hundred one".