136605451 has 2 divisors, whose sum is σ = 136605452. Its totient is φ = 136605450.

The previous prime is 136605401. The next prime is 136605479. The reversal of 136605451 is 154506631.

It is a strong prime.

It is an emirp because it is prime and its reverse (154506631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136605451 - 2⁷ = 136605323 is a prime.

It is a super-2 number, since 2×136605451² = 37322098485826802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136605401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68302725 + 68302726.

It is an arithmetic number, because the mean of its divisors is an integer number (68302726).

Almost surely, 2^136605451 is an apocalyptic number.

136605451 is a deficient number, since it is larger than the sum of its proper divisors (1).

136605451 is an equidigital number, since it uses as much as digits as its factorization.

136605451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 136605451 is about 11687.8334604836. The cubic root of 136605451 is about 515.0183183857.

The spelling of 136605451 in words is "one hundred thirty-six million, six hundred five thousand, four hundred fifty-one".