135486481 has 8 divisors (see below), whose sum is σ = 154491624. Its totient is φ = 117707520.

The previous prime is 135486437. The next prime is 135486487. The reversal of 135486481 is 184684531.

It can be written as a sum of positive squares in 4 ways, for example, as 14288400 + 121198081 = 3780^2 + 11009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135486481 - 2⁹ = 135485969 is a prime.

It is a super-2 number, since 2×135486481² = 36713173067526722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135486487) 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, 306310 + ... + 306751.

It is an arithmetic number, because the mean of its divisors is an integer number (19311453).

Almost surely, 2^135486481 is an apocalyptic number.

It is an amenable number.

135486481 is a deficient number, since it is larger than the sum of its proper divisors (19005143).

135486481 is a wasteful number, since it uses less digits than its factorization.

135486481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613091.

The product of its digits is 92160, while the sum is 40.

The square root of 135486481 is about 11639.8660215657. The cubic root of 135486481 is about 513.6082459076.

The spelling of 135486481 in words is "one hundred thirty-five million, four hundred eighty-six thousand, four hundred eighty-one".