135853237 has 4 divisors (see below), whose sum is σ = 146303500. Its totient is φ = 125402976.

The previous prime is 135853231. The next prime is 135853243. The reversal of 135853237 is 732358531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 732358531 = 103 ⋅7110277.

It is an interprime number because it is at equal distance from previous prime (135853231) and next prime (135853243).

It can be written as a sum of positive squares in 2 ways, for example, as 54745201 + 81108036 = 7399^2 + 9006^2 .

It is a cyclic number.

It is not a de Polignac number, because 135853237 - 2³ = 135853229 is a prime.

It is a super-2 number, since 2×135853237² = 36912204006756338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135853196 and 135853205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135853231) 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, 5225112 + ... + 5225137.

It is an arithmetic number, because the mean of its divisors is an integer number (36575875).

Almost surely, 2^135853237 is an apocalyptic number.

It is an amenable number.

135853237 is a deficient number, since it is larger than the sum of its proper divisors (10450263).

135853237 is a wasteful number, since it uses less digits than its factorization.

135853237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10450262.

The product of its digits is 75600, while the sum is 37.

The square root of 135853237 is about 11655.6096794634. The cubic root of 135853237 is about 514.0712667463.

The spelling of 135853237 in words is "one hundred thirty-five million, eight hundred fifty-three thousand, two hundred thirty-seven".