361577081 has 2 divisors, whose sum is σ = 361577082. Its totient is φ = 361577080.

The previous prime is 361577059. The next prime is 361577119. The reversal of 361577081 is 180775163.

It is an a-pointer prime, because the next prime (361577119) can be obtained adding 361577081 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343768681 + 17808400 = 18541^2 + 4220^2 .

It is an emirp because it is prime and its reverse (180775163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 361577081 - 2¹⁰ = 361576057 is a prime.

It is a super-2 number, since 2×361577081² = 261475971008961122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (361571081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180788540 + 180788541.

It is an arithmetic number, because the mean of its divisors is an integer number (180788541).

Almost surely, 2^361577081 is an apocalyptic number.

It is an amenable number.

361577081 is a deficient number, since it is larger than the sum of its proper divisors (1).

361577081 is an equidigital number, since it uses as much as digits as its factorization.

361577081 is an evil number, because the sum of its binary digits is even.

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

The square root of 361577081 is about 19015.1802778727. The cubic root of 361577081 is about 712.4159455989.

The spelling of 361577081 in words is "three hundred sixty-one million, five hundred seventy-seven thousand, eighty-one".