135474521 has 16 divisors (see below), whose sum is σ = 167462400. Its totient is φ = 106723008.

The previous prime is 135474517. The next prime is 135474523. The reversal of 135474521 is 125474531.

It is not a de Polignac number, because 135474521 - 2² = 135474517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135474523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18635 + ... + 24863.

It is an arithmetic number, because the mean of its divisors is an integer number (10466400).

Almost surely, 2^135474521 is an apocalyptic number.

It is an amenable number.

135474521 is a deficient number, since it is larger than the sum of its proper divisors (31987879).

135474521 is a wasteful number, since it uses less digits than its factorization.

135474521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6488.

The product of its digits is 16800, while the sum is 32.

The square root of 135474521 is about 11639.3522586096. The cubic root of 135474521 is about 513.5931326276.

The spelling of 135474521 in words is "one hundred thirty-five million, four hundred seventy-four thousand, five hundred twenty-one".