135771499 has 4 divisors (see below), whose sum is σ = 136670800. Its totient is φ = 134872200.

The previous prime is 135771491. The next prime is 135771529. The reversal of 135771499 is 994177531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994177531 = 37 ⋅26869663.

It is a cyclic number.

It is not a de Polignac number, because 135771499 - 2³ = 135771491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135771491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449424 + ... + 449725.

It is an arithmetic number, because the mean of its divisors is an integer number (34167700).

Almost surely, 2^135771499 is an apocalyptic number.

135771499 is a deficient number, since it is larger than the sum of its proper divisors (899301).

135771499 is an equidigital number, since it uses as much as digits as its factorization.

135771499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899300.

The product of its digits is 238140, while the sum is 46.

The square root of 135771499 is about 11652.1027716031. The cubic root of 135771499 is about 513.9681466733.

The spelling of 135771499 in words is "one hundred thirty-five million, seven hundred seventy-one thousand, four hundred ninety-nine".