135899252 has 6 divisors (see below), whose sum is σ = 237823698. Its totient is φ = 67949624.

The previous prime is 135899233. The next prime is 135899263. The reversal of 135899252 is 252998531.

It can be written as a sum of positive squares in only one way, i.e., 117202276 + 18696976 = 10826^2 + 4324^2 .

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 as a sum of consecutive naturals, namely, 16987403 + ... + 16987410.

It is an arithmetic number, because the mean of its divisors is an integer number (39637283).

Almost surely, 2^135899252 is an apocalyptic number.

It is an amenable number.

135899252 is a deficient number, since it is larger than the sum of its proper divisors (101924446).

135899252 is a wasteful number, since it uses less digits than its factorization.

135899252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33974817 (or 33974815 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 135899252 is about 11657.5834545587. The cubic root of 135899252 is about 514.1293007434.

The spelling of 135899252 in words is "one hundred thirty-five million, eight hundred ninety-nine thousand, two hundred fifty-two".