13540245 has 32 divisors (see below), whose sum is σ = 23742720. Its totient is φ = 6558720.

The previous prime is 13540237. The next prime is 13540249. The reversal of 13540245 is 54204531.

It is not a de Polignac number, because 13540245 - 2³ = 13540237 is a prime.

It is a super-3 number, since 3×13540245³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6480 + ... + 8310.

It is an arithmetic number, because the mean of its divisors is an integer number (741960).

Almost surely, 2^13540245 is an apocalyptic number.

13540245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13540245 is a deficient number, since it is larger than the sum of its proper divisors (10202475).

13540245 is a wasteful number, since it uses less digits than its factorization.

13540245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 13540245 is about 3679.7071894378. The cubic root of 13540245 is about 238.3465340084.

Adding to 13540245 its reverse (54204531), we get a palindrome (67744776).

The spelling of 13540245 in words is "thirteen million, five hundred forty thousand, two hundred forty-five".