135261449 has 4 divisors (see below), whose sum is σ = 135285060. Its totient is φ = 135237840.

The previous prime is 135261443. The next prime is 135261487. The reversal of 135261449 is 944162531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37884025 + 97377424 = 6155^2 + 9868^2 .

It is a cyclic number.

It is not a de Polignac number, because 135261449 - 2⁴ = 135261433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135261443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2867 + ... + 16695.

It is an arithmetic number, because the mean of its divisors is an integer number (33821265).

Almost surely, 2^135261449 is an apocalyptic number.

It is an amenable number.

135261449 is a deficient number, since it is larger than the sum of its proper divisors (23611).

135261449 is an equidigital number, since it uses as much as digits as its factorization.

135261449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23610.

The product of its digits is 25920, while the sum is 35.

The square root of 135261449 is about 11630.1955701527. The cubic root of 135261449 is about 513.3237345238.

The spelling of 135261449 in words is "one hundred thirty-five million, two hundred sixty-one thousand, four hundred forty-nine".