135861145 has 16 divisors (see below), whose sum is σ = 186559488. Its totient is φ = 93044160.

The previous prime is 135861137. The next prime is 135861181. The reversal of 135861145 is 541168531.

It is not a de Polignac number, because 135861145 - 2³ = 135861137 is a prime.

It is a super-2 number, since 2×135861145² = 36916501441422050, 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 135861145.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32727 + ... + 36643.

It is an arithmetic number, because the mean of its divisors is an integer number (11659968).

Almost surely, 2^135861145 is an apocalyptic number.

It is an amenable number.

135861145 is a deficient number, since it is larger than the sum of its proper divisors (50698343).

135861145 is an equidigital number, since it uses as much as digits as its factorization.

135861145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920.

The product of its digits is 14400, while the sum is 34.

The square root of 135861145 is about 11655.9489103204. The cubic root of 135861145 is about 514.0812412275.

The spelling of 135861145 in words is "one hundred thirty-five million, eight hundred sixty-one thousand, one hundred forty-five".