26361857 has 2 divisors, whose sum is σ = 26361858. Its totient is φ = 26361856.

The previous prime is 26361847. The next prime is 26361859. The reversal of 26361857 is 75816362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16128256 + 10233601 = 4016^2 + 3199^2 .

It is a cyclic number.

It is not a de Polignac number, because 26361857 - 2¹⁰ = 26360833 is a prime.

Together with 26361859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26361857.

It is not a weakly prime, because it can be changed into another prime (26361859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13180928 + 13180929.

It is an arithmetic number, because the mean of its divisors is an integer number (13180929).

It is a Proth number, since it is equal to 1609 ⋅ 2¹⁴ + 1 and 1609 < 2¹⁴.

Almost surely, 2^26361857 is an apocalyptic number.

It is an amenable number.

26361857 is a deficient number, since it is larger than the sum of its proper divisors (1).

26361857 is an equidigital number, since it uses as much as digits as its factorization.

26361857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 26361857 is about 5134.3799041364. The cubic root of 26361857 is about 297.6176386684.

The spelling of 26361857 in words is "twenty-six million, three hundred sixty-one thousand, eight hundred fifty-seven".