26856553 has 8 divisors (see below), whose sum is σ = 27552800. Its totient is φ = 26163648.

The previous prime is 26856539. The next prime is 26856601. The reversal of 26856553 is 35565862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26856553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26856503) 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 7 ways as a sum of consecutive naturals, for example, 26113 + ... + 27121.

It is an arithmetic number, because the mean of its divisors is an integer number (3444100).

Almost surely, 2^26856553 is an apocalyptic number.

It is an amenable number.

26856553 is a deficient number, since it is larger than the sum of its proper divisors (696247).

26856553 is a wasteful number, since it uses less digits than its factorization.

26856553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671.

The product of its digits is 216000, while the sum is 40.

The square root of 26856553 is about 5182.3308462506. The cubic root of 26856553 is about 299.4677711480.

The spelling of 26856553 in words is "twenty-six million, eight hundred fifty-six thousand, five hundred fifty-three".