135381554 has 32 divisors (see below), whose sum is σ = 253725696. Its totient is φ = 52632720.

The previous prime is 135381551. The next prime is 135381563. The reversal of 135381554 is 455183531.

It is not an unprimeable number, because it can be changed into a prime (135381551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126827 + ... + 127889.

It is an arithmetic number, because the mean of its divisors is an integer number (7928928).

Almost surely, 2^135381554 is an apocalyptic number.

135381554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

135381554 is a deficient number, since it is larger than the sum of its proper divisors (118344142).

135381554 is a wasteful number, since it uses less digits than its factorization.

135381554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its digits is 36000, while the sum is 35.

The square root of 135381554 is about 11635.3579231582. The cubic root of 135381554 is about 513.4756243353.

The spelling of 135381554 in words is "one hundred thirty-five million, three hundred eighty-one thousand, five hundred fifty-four".