135163251 has 24 divisors (see below), whose sum is σ = 199630080. Its totient is φ = 88099200.

The previous prime is 135163247. The next prime is 135163253. The reversal of 135163251 is 152361531.

135163251 is a `hidden beast` number, since 1 + 351 + 63 + 251 = 666.

135163251 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 135163251 - 2² = 135163247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135163253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104215 + ... + 105503.

It is an arithmetic number, because the mean of its divisors is an integer number (8317920).

Almost surely, 2^135163251 is an apocalyptic number.

135163251 is a deficient number, since it is larger than the sum of its proper divisors (64466829).

135163251 is a wasteful number, since it uses less digits than its factorization.

135163251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1544 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 135163251 is about 11625.9731205607. The cubic root of 135163251 is about 513.1994823989.

The spelling of 135163251 in words is "one hundred thirty-five million, one hundred sixty-three thousand, two hundred fifty-one".