135551120 has 40 divisors (see below), whose sum is σ = 316170240. Its totient is φ = 54046080.

The previous prime is 135551107. The next prime is 135551137. The reversal of 135551120 is 21155531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×135551120² = 36748212266508800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23921 + ... + 29039.

It is an arithmetic number, because the mean of its divisors is an integer number (7904256).

Almost surely, 2^135551120 is an apocalyptic number.

135551120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135551120 is an abundant number, since it is smaller than the sum of its proper divisors (180619120).

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

135551120 is a wasteful number, since it uses less digits than its factorization.

135551120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463 (or 5457 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 135551120 is about 11642.6423117779. The cubic root of 135551120 is about 513.6899117312.

It can be divided in two parts, 1355511 and 20, that added together give a palindrome (1355531).

The spelling of 135551120 in words is "one hundred thirty-five million, five hundred fifty-one thousand, one hundred twenty".