135262491 has 48 divisors (see below), whose sum is σ = 232160544. Its totient is φ = 69382656.

The previous prime is 135262459. The next prime is 135262499. The reversal of 135262491 is 194262531.

135262491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135262491 - 2⁵ = 135262459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135262499) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69751 + ... + 71663.

It is an arithmetic number, because the mean of its divisors is an integer number (4836678).

Almost surely, 2^135262491 is an apocalyptic number.

135262491 is a deficient number, since it is larger than the sum of its proper divisors (96898053).

135262491 is a wasteful number, since it uses less digits than its factorization.

135262491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980 (or 1973 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 135262491 is about 11630.2403672495. The cubic root of 135262491 is about 513.3250526672.

The spelling of 135262491 in words is "one hundred thirty-five million, two hundred sixty-two thousand, four hundred ninety-one".