135356251 has 4 divisors (see below), whose sum is σ = 135466912. Its totient is φ = 135245592.

The previous prime is 135356237. The next prime is 135356269. The reversal of 135356251 is 152653531.

135356251 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 135356251 - 2¹¹ = 135354203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135356201) 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, 53475 + ... + 55948.

It is an arithmetic number, because the mean of its divisors is an integer number (33866728).

Almost surely, 2^135356251 is an apocalyptic number.

135356251 is a deficient number, since it is larger than the sum of its proper divisors (110661).

135356251 is a wasteful number, since it uses less digits than its factorization.

135356251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110660.

The product of its digits is 13500, while the sum is 31.

The square root of 135356251 is about 11634.2705400897. The cubic root of 135356251 is about 513.4436325736.

The spelling of 135356251 in words is "one hundred thirty-five million, three hundred fifty-six thousand, two hundred fifty-one".