26531983 has 4 divisors (see below), whose sum is σ = 26710200. Its totient is φ = 26353768.

The previous prime is 26531977. The next prime is 26532007. The reversal of 26531983 is 38913562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26531983 - 2⁹ = 26531471 is a prime.

It is a super-2 number, since 2×26531983² = 1407892243824578, 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 (26531963) 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, 88885 + ... + 89182.

It is an arithmetic number, because the mean of its divisors is an integer number (6677550).

Almost surely, 2^26531983 is an apocalyptic number.

26531983 is a deficient number, since it is larger than the sum of its proper divisors (178217).

26531983 is a wasteful number, since it uses less digits than its factorization.

26531983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178216.

The product of its digits is 38880, while the sum is 37.

The square root of 26531983 is about 5150.9205973302. The cubic root of 26531983 is about 298.2564905829.

The spelling of 26531983 in words is "twenty-six million, five hundred thirty-one thousand, nine hundred eighty-three".