26898121 has 2 divisors, whose sum is σ = 26898122. Its totient is φ = 26898120.

The previous prime is 26898119. The next prime is 26898127. The reversal of 26898121 is 12189862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 5405625 = 4636^2 + 2325^2 .

It is a cyclic number.

It is not a de Polignac number, because 26898121 - 2¹ = 26898119 is a prime.

Together with 26898119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26898127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13449060 + 13449061.

It is an arithmetic number, because the mean of its divisors is an integer number (13449061).

Almost surely, 2^26898121 is an apocalyptic number.

It is an amenable number.

26898121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26898121 is an equidigital number, since it uses as much as digits as its factorization.

26898121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 37.

The square root of 26898121 is about 5186.3398461728. The cubic root of 26898121 is about 299.6221947808.

It can be divided in two parts, 268 and 98121, that added together give a palindrome (98389).

The spelling of 26898121 in words is "twenty-six million, eight hundred ninety-eight thousand, one hundred twenty-one".