135537845 has 12 divisors (see below), whose sum is σ = 167168484. Its totient is φ = 105494400.

The previous prime is 135537769. The next prime is 135537847. The reversal of 135537845 is 548735531.

It can be written as a sum of positive squares in 6 ways, for example, as 1681 + 135536164 = 41^2 + 11642^2 .

It is not a de Polignac number, because 135537845 - 2¹⁴ = 135521461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135537847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3056 + ... + 16745.

It is an arithmetic number, because the mean of its divisors is an integer number (13930707).

Almost surely, 2^135537845 is an apocalyptic number.

It is an amenable number.

135537845 is a deficient number, since it is larger than the sum of its proper divisors (31630639).

135537845 is an equidigital number, since it uses as much as digits as its factorization.

135537845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19880 (or 19843 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The square root of 135537845 is about 11642.0721952752. The cubic root of 135537845 is about 513.6731420279.

The spelling of 135537845 in words is "one hundred thirty-five million, five hundred thirty-seven thousand, eight hundred forty-five".