26501401 has 2 divisors, whose sum is σ = 26501402. Its totient is φ = 26501400.

The previous prime is 26501399. The next prime is 26501407. The reversal of 26501401 is 10410562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 491401 = 5100^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 26501401 - 2¹ = 26501399 is a prime.

Together with 26501399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26501407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250700 + 13250701.

It is an arithmetic number, because the mean of its divisors is an integer number (13250701).

Almost surely, 2^26501401 is an apocalyptic number.

It is an amenable number.

26501401 is a deficient number, since it is larger than the sum of its proper divisors (1).

26501401 is an equidigital number, since it uses as much as digits as its factorization.

26501401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 26501401 is about 5147.9511458443. The cubic root of 26501401 is about 298.1418517490.

Adding to 26501401 its reverse (10410562), we get a palindrome (36911963).

The spelling of 26501401 in words is "twenty-six million, five hundred one thousand, four hundred one".