135503506 has 4 divisors (see below), whose sum is σ = 203255262. Its totient is φ = 67751752.

The previous prime is 135503503. The next prime is 135503521. The reversal of 135503506 is 605305531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 114297481 + 21206025 = 10691^2 + 4605^2 .

It is a super-2 number, since 2×135503506² = 36722400276584072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135503503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33875875 + ... + 33875878.

Almost surely, 2^135503506 is an apocalyptic number.

135503506 is a deficient number, since it is larger than the sum of its proper divisors (67751756).

135503506 is an equidigital number, since it uses as much as digits as its factorization.

135503506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67751755.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 135503506 is about 11640.5973214436. The cubic root of 135503506 is about 513.6297580518.

The spelling of 135503506 in words is "one hundred thirty-five million, five hundred three thousand, five hundred six".