135413251 has 8 divisors (see below), whose sum is σ = 140906304. Its totient is φ = 130029120.

The previous prime is 135413249. The next prime is 135413273. The reversal of 135413251 is 152314531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135413251 - 2¹ = 135413249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135413281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24690 + ... + 29671.

It is an arithmetic number, because the mean of its divisors is an integer number (17613288).

Almost surely, 2^135413251 is an apocalyptic number.

135413251 is a deficient number, since it is larger than the sum of its proper divisors (5493053).

135413251 is an equidigital number, since it uses as much as digits as its factorization.

135413251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54461.

The product of its digits is 1800, while the sum is 25.

The square root of 135413251 is about 11636.7199416330. The cubic root of 135413251 is about 513.5156947052.

Adding to 135413251 its reverse (152314531), we get a palindrome (287727782).

The spelling of 135413251 in words is "one hundred thirty-five million, four hundred thirteen thousand, two hundred fifty-one".