135892261 has 4 divisors (see below), whose sum is σ = 136124352. Its totient is φ = 135660172.

The previous prime is 135892259. The next prime is 135892291. The reversal of 135892261 is 162298531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162298531 = 89 ⋅1823579.

It is a cyclic number.

It is not a de Polignac number, because 135892261 - 2¹ = 135892259 is a prime.

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 135892261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135892241) 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 3 ways as a sum of consecutive naturals, for example, 115165 + ... + 116338.

It is an arithmetic number, because the mean of its divisors is an integer number (34031088).

Almost surely, 2^135892261 is an apocalyptic number.

It is an amenable number.

135892261 is a deficient number, since it is larger than the sum of its proper divisors (232091).

135892261 is an equidigital number, since it uses as much as digits as its factorization.

135892261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232090.

The product of its digits is 25920, while the sum is 37.

The square root of 135892261 is about 11657.2836029669. The cubic root of 135892261 is about 514.1204845566.

The spelling of 135892261 in words is "one hundred thirty-five million, eight hundred ninety-two thousand, two hundred sixty-one".