61180201 has 2 divisors, whose sum is σ = 61180202. Its totient is φ = 61180200.

The previous prime is 61180199. The next prime is 61180211. The reversal of 61180201 is 10208116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60466176 + 714025 = 7776^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 61180201 - 2¹ = 61180199 is a prime.

Together with 61180199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61180211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30590100 + 30590101.

It is an arithmetic number, because the mean of its divisors is an integer number (30590101).

Almost surely, 2^61180201 is an apocalyptic number.

It is an amenable number.

61180201 is a deficient number, since it is larger than the sum of its proper divisors (1).

61180201 is an equidigital number, since it uses as much as digits as its factorization.

61180201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 61180201 is about 7821.7773555631. Note that the first 3 decimals coincide. The cubic root of 61180201 is about 394.0369660490.

Adding to 61180201 its reverse (10208116), we get a palindrome (71388317).

The spelling of 61180201 in words is "sixty-one million, one hundred eighty thousand, two hundred one".