26550457 has 4 divisors (see below), whose sum is σ = 27466020. Its totient is φ = 25634896.

The previous prime is 26550449. The next prime is 26550473. The reversal of 26550457 is 75405562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75405562 = 2 ⋅37702781.

It can be written as a sum of positive squares in 2 ways, for example, as 7706176 + 18844281 = 2776^2 + 4341^2 .

It is a cyclic number.

It is not a de Polignac number, because 26550457 - 2³ = 26550449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26550437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457738 + ... + 457795.

It is an arithmetic number, because the mean of its divisors is an integer number (6866505).

Almost surely, 2^26550457 is an apocalyptic number.

It is an amenable number.

26550457 is a deficient number, since it is larger than the sum of its proper divisors (915563).

26550457 is an equidigital number, since it uses as much as digits as its factorization.

26550457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915562.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 26550457 is about 5152.7135569523. The cubic root of 26550457 is about 298.3256990303.

The spelling of 26550457 in words is "twenty-six million, five hundred fifty thousand, four hundred fifty-seven".