26632561 has 2 divisors, whose sum is σ = 26632562. Its totient is φ = 26632560.

The previous prime is 26632549. The next prime is 26632577. The reversal of 26632561 is 16523662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 571536 = 5105^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 26632561 - 2⁹ = 26632049 is a prime.

It is not a weakly prime, because it can be changed into another prime (26632061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13316280 + 13316281.

It is an arithmetic number, because the mean of its divisors is an integer number (13316281).

Almost surely, 2^26632561 is an apocalyptic number.

It is an amenable number.

26632561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26632561 is an equidigital number, since it uses as much as digits as its factorization.

26632561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 26632561 is about 5160.6744714233. The cubic root of 26632561 is about 298.6328943519.

The spelling of 26632561 in words is "twenty-six million, six hundred thirty-two thousand, five hundred sixty-one".