36181577 has 2 divisors, whose sum is σ = 36181578. Its totient is φ = 36181576.

The previous prime is 36181543. The next prime is 36181591. The reversal of 36181577 is 77518163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35808256 + 373321 = 5984^2 + 611^2 .

It is an emirp because it is prime and its reverse (77518163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36181577 - 2⁶ = 36181513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36181577.

It is not a weakly prime, because it can be changed into another prime (36181477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18090788 + 18090789.

It is an arithmetic number, because the mean of its divisors is an integer number (18090789).

Almost surely, 2^36181577 is an apocalyptic number.

It is an amenable number.

36181577 is a deficient number, since it is larger than the sum of its proper divisors (1).

36181577 is an equidigital number, since it uses as much as digits as its factorization.

36181577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 38.

The square root of 36181577 is about 6015.1123846525. The cubic root of 36181577 is about 330.7469367856.

The spelling of 36181577 in words is "thirty-six million, one hundred eighty-one thousand, five hundred seventy-seven".