135252005 has 18 divisors (see below), whose sum is σ = 189055206. Its totient is φ = 92619408.

The previous prime is 135251999. The next prime is 135252011. The reversal of 135252005 is 500252531.

It is an interprime number because it is at equal distance from previous prime (135251999) and next prime (135252011).

It can be written as a sum of positive squares in only one way, i.e., 108201604 + 27050401 = 10402^2 + 5201^2 .

It is not a de Polignac number, because 135252005 - 2⁸ = 135251749 is a prime.

It is a Duffinian number.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 181664 + ... + 182406.

It is an arithmetic number, because the mean of its divisors is an integer number (10503067).

Almost surely, 2^135252005 is an apocalyptic number.

It is an amenable number.

135252005 is a deficient number, since it is larger than the sum of its proper divisors (53803201).

135252005 is an frugal number, since it uses more digits than its factorization.

135252005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 135252005 is about 11629.7895509764. The cubic root of 135252005 is about 513.3117874336.

The spelling of 135252005 in words is "one hundred thirty-five million, two hundred fifty-two thousand, five".