135532544 has 104 divisors (see below), whose sum is σ = 322397760. Its totient is φ = 55738368.

The previous prime is 135532543. The next prime is 135532549. The reversal of 135532544 is 445235531.

It is a happy number.

It is a super-2 number, since 2×135532544² = 36738140966223872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 135532544.

It is not an unprimeable number, because it can be changed into a prime (135532541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831407 + ... + 831569.

Almost surely, 2^135532544 is an apocalyptic number.

135532544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135532544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161198880).

135532544 is an abundant number, since it is smaller than the sum of its proper divisors (186865216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135532544 is an equidigital number, since it uses as much as digits as its factorization.

135532544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 201 counting only the distinct ones).

The product of its digits is 36000, while the sum is 32.

The square root of 135532544 is about 11641.8445273934. The cubic root of 135532544 is about 513.6664452099. Note that the first 3 decimals are identical.

The spelling of 135532544 in words is "one hundred thirty-five million, five hundred thirty-two thousand, five hundred forty-four".