135261451 has 4 divisors (see below), whose sum is σ = 145666192. Its totient is φ = 124856712.

The previous prime is 135261443. The next prime is 135261487. The reversal of 135261451 is 154162531.

135261451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 135261451 - 2³ = 135261443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135261431) 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, 5202351 + ... + 5202376.

It is an arithmetic number, because the mean of its divisors is an integer number (36416548).

Almost surely, 2^135261451 is an apocalyptic number.

135261451 is a deficient number, since it is larger than the sum of its proper divisors (10404741).

135261451 is a wasteful number, since it uses less digits than its factorization.

135261451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10404740.

The product of its digits is 3600, while the sum is 28.

The square root of 135261451 is about 11630.1956561358. The cubic root of 135261451 is about 513.3237370538.

The spelling of 135261451 in words is "one hundred thirty-five million, two hundred sixty-one thousand, four hundred fifty-one".