13545331 has 2 divisors, whose sum is σ = 13545332. Its totient is φ = 13545330.

The previous prime is 13545313. The next prime is 13545341. The reversal of 13545331 is 13354531.

Together with previous prime (13545313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13354531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13545331 - 2⁹ = 13544819 is a prime.

It is a super-2 number, since 2×13545331² = 366951983799122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13545296 and 13545305.

It is not a weakly prime, because it can be changed into another prime (13545341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6772665 + 6772666.

It is an arithmetic number, because the mean of its divisors is an integer number (6772666).

Almost surely, 2^13545331 is an apocalyptic number.

13545331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13545331 is an equidigital number, since it uses as much as digits as its factorization.

13545331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 25.

The square root of 13545331 is about 3680.3982121504. The cubic root of 13545331 is about 238.3763729250.

Adding to 13545331 its reverse (13354531), we get a palindrome (26899862).

The spelling of 13545331 in words is "thirteen million, five hundred forty-five thousand, three hundred thirty-one".