26520131 has 16 divisors (see below), whose sum is σ = 29652480. Its totient is φ = 23517120.

The previous prime is 26520113. The next prime is 26520139. The reversal of 26520131 is 13102562.

It is a de Polignac number, because none of the positive numbers 2^k-26520131 is a prime.

It is a super-2 number, since 2×26520131² = 1406634696514322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26520139) 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 15 ways as a sum of consecutive naturals, for example, 100706 + ... + 100968.

It is an arithmetic number, because the mean of its divisors is an integer number (1853280).

Almost surely, 2^26520131 is an apocalyptic number.

26520131 is a deficient number, since it is larger than the sum of its proper divisors (3132349).

26520131 is a wasteful number, since it uses less digits than its factorization.

26520131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 26520131 is about 5149.7699948638. The cubic root of 26520131 is about 298.2120729654.

Adding to 26520131 its reverse (13102562), we get a palindrome (39622693).

Subtracting from 26520131 its reverse (13102562), we obtain a square (13417569 = 3663²).

The spelling of 26520131 in words is "twenty-six million, five hundred twenty thousand, one hundred thirty-one".