26231519 has 2 divisors, whose sum is σ = 26231520. Its totient is φ = 26231518.

The previous prime is 26231507. The next prime is 26231539. The reversal of 26231519 is 91513262.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26231519 is a prime.

It is a super-2 number, since 2×26231519² = 1376185178094722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 26231491 and 26231500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26231539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13115759 + 13115760.

It is an arithmetic number, because the mean of its divisors is an integer number (13115760).

Almost surely, 2^26231519 is an apocalyptic number.

26231519 is a deficient number, since it is larger than the sum of its proper divisors (1).

26231519 is an equidigital number, since it uses as much as digits as its factorization.

26231519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 26231519 is about 5121.6715044993. The cubic root of 26231519 is about 297.1263354724.

The spelling of 26231519 in words is "twenty-six million, two hundred thirty-one thousand, five hundred nineteen".