135524251 has 2 divisors, whose sum is σ = 135524252. Its totient is φ = 135524250.

The previous prime is 135524209. The next prime is 135524269. The reversal of 135524251 is 152425531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135524251 - 2¹¹ = 135522203 is a prime.

It is a super-2 number, since 2×135524251² = 36733645218222002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135524201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67762125 + 67762126.

It is an arithmetic number, because the mean of its divisors is an integer number (67762126).

Almost surely, 2^135524251 is an apocalyptic number.

135524251 is a deficient number, since it is larger than the sum of its proper divisors (1).

135524251 is an equidigital number, since it uses as much as digits as its factorization.

135524251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6000, while the sum is 28.

The square root of 135524251 is about 11641.4883498632. The cubic root of 135524251 is about 513.6559682116.

Adding to 135524251 its reverse (152425531), we get a palindrome (287949782).

The spelling of 135524251 in words is "one hundred thirty-five million, five hundred twenty-four thousand, two hundred fifty-one".