26672557 has 2 divisors, whose sum is σ = 26672558. Its totient is φ = 26672556.

The previous prime is 26672549. The next prime is 26672579. The reversal of 26672557 is 75527662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18412681 + 8259876 = 4291^2 + 2874^2 .

It is a cyclic number.

It is not a de Polignac number, because 26672557 - 2³ = 26672549 is a prime.

It is a super-2 number, since 2×26672557² = 1422850593836498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26672537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13336278 + 13336279.

It is an arithmetic number, because the mean of its divisors is an integer number (13336279).

Almost surely, 2^26672557 is an apocalyptic number.

It is an amenable number.

26672557 is a deficient number, since it is larger than the sum of its proper divisors (1).

26672557 is an equidigital number, since it uses as much as digits as its factorization.

26672557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 40.

The square root of 26672557 is about 5164.5480925246. The cubic root of 26672557 is about 298.7823122908.

The spelling of 26672557 in words is "twenty-six million, six hundred seventy-two thousand, five hundred fifty-seven".