136154281 has 2 divisors, whose sum is σ = 136154282. Its totient is φ = 136154280.

The previous prime is 136154269. The next prime is 136154327. The reversal of 136154281 is 182451631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97515625 + 38638656 = 9875^2 + 6216^2 .

It is a cyclic number.

It is not a de Polignac number, because 136154281 - 2²¹ = 134057129 is a prime.

It is a super-2 number, since 2×136154281² = 37075976469253922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136154261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68077140 + 68077141.

It is an arithmetic number, because the mean of its divisors is an integer number (68077141).

Almost surely, 2^136154281 is an apocalyptic number.

It is an amenable number.

136154281 is a deficient number, since it is larger than the sum of its proper divisors (1).

136154281 is an equidigital number, since it uses as much as digits as its factorization.

136154281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 31.

The square root of 136154281 is about 11668.5166580847. The cubic root of 136154281 is about 514.4507053775.

The spelling of 136154281 in words is "one hundred thirty-six million, one hundred fifty-four thousand, two hundred eighty-one".