135862281 has 6 divisors (see below), whose sum is σ = 196245530. Its totient is φ = 90574848.

The previous prime is 135862277. The next prime is 135862297. The reversal of 135862281 is 182268531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 131882256 + 3980025 = 11484^2 + 1995^2 .

It is not a de Polignac number, because 135862281 - 2² = 135862277 is a prime.

It is a super-2 number, since 2×135862281² = 36917118797045922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135862201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7547896 + ... + 7547913.

Almost surely, 2^135862281 is an apocalyptic number.

It is an amenable number.

135862281 is a deficient number, since it is larger than the sum of its proper divisors (60383249).

135862281 is a wasteful number, since it uses less digits than its factorization.

135862281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15095815 (or 15095812 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 135862281 is about 11655.9976406998. The cubic root of 135862281 is about 514.0826740499.

The spelling of 135862281 in words is "one hundred thirty-five million, eight hundred sixty-two thousand, two hundred eighty-one".