135567956 has 12 divisors (see below), whose sum is σ = 237325620. Its totient is φ = 67760640.

The previous prime is 135567947. The next prime is 135567959. The reversal of 135567956 is 659765531.

It can be written as a sum of positive squares in 2 ways, for example, as 84015556 + 51552400 = 9166^2 + 7180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135567956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135567959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18650 + ... + 24878.

It is an arithmetic number, because the mean of its divisors is an integer number (19777135).

Almost surely, 2^135567956 is an apocalyptic number.

It is an amenable number.

135567956 is a deficient number, since it is larger than the sum of its proper divisors (101757664).

135567956 is a wasteful number, since it uses less digits than its factorization.

135567956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11674 (or 11672 counting only the distinct ones).

The product of its digits is 850500, while the sum is 47.

The square root of 135567956 is about 11643.3653210745. The cubic root of 135567956 is about 513.7111783090.

It can be divided in two parts, 13556 and 7956, that added together give a palindrome (21512).

The spelling of 135567956 in words is "one hundred thirty-five million, five hundred sixty-seven thousand, nine hundred fifty-six".