136777541 has 2 divisors, whose sum is σ = 136777542. Its totient is φ = 136777540.

The previous prime is 136777499. The next prime is 136777547. The reversal of 136777541 is 145777631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106296100 + 30481441 = 10310^2 + 5521^2 .

It is a cyclic number.

It is not a de Polignac number, because 136777541 - 2²² = 132583237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136777547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68388770 + 68388771.

It is an arithmetic number, because the mean of its divisors is an integer number (68388771).

Almost surely, 2^136777541 is an apocalyptic number.

It is an amenable number.

136777541 is a deficient number, since it is larger than the sum of its proper divisors (1).

136777541 is an equidigital number, since it uses as much as digits as its factorization.

136777541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 41.

The square root of 136777541 is about 11695.1930723695. The cubic root of 136777541 is about 515.2344940227.

The spelling of 136777541 in words is "one hundred thirty-six million, seven hundred seventy-seven thousand, five hundred forty-one".