26550749 has 4 divisors (see below), whose sum is σ = 26662080. Its totient is φ = 26439420.

The previous prime is 26550731. The next prime is 26550791. The reversal of 26550749 is 94705562.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26550749 is a prime.

It is a super-2 number, since 2×26550749² = 1409884544922002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26550449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55307 + ... + 55784.

It is an arithmetic number, because the mean of its divisors is an integer number (6665520).

Almost surely, 2^26550749 is an apocalyptic number.

It is an amenable number.

26550749 is a deficient number, since it is larger than the sum of its proper divisors (111331).

26550749 is a wasteful number, since it uses less digits than its factorization.

26550749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111330.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 26550749 is about 5152.7418914593. The cubic root of 26550749 is about 298.3267926811.

The spelling of 26550749 in words is "twenty-six million, five hundred fifty thousand, seven hundred forty-nine".