135081497 has 8 divisors (see below), whose sum is σ = 136033800. Its totient is φ = 134133120.

The previous prime is 135081481. The next prime is 135081509. The reversal of 135081497 is 794180531.

It can be written as a sum of positive squares in 4 ways, for example, as 101022601 + 34058896 = 10051^2 + 5836^2 .

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 135081497 - 2⁴ = 135081481 is a prime.

It is a super-2 number, since 2×135081497² = 36494021663522018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135081497.

It is not an unprimeable number, because it can be changed into a prime (135081437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101597 + ... + 102917.

It is an arithmetic number, because the mean of its divisors is an integer number (17004225).

Almost surely, 2^135081497 is an apocalyptic number.

It is an amenable number.

135081497 is a deficient number, since it is larger than the sum of its proper divisors (952303).

135081497 is a wasteful number, since it uses less digits than its factorization.

135081497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 135081497 is about 11622.4565819796. The cubic root of 135081497 is about 513.0959913190.

The spelling of 135081497 in words is "one hundred thirty-five million, eighty-one thousand, four hundred ninety-seven".