61116001 has 2 divisors, whose sum is σ = 61116002. Its totient is φ = 61116000.

The previous prime is 61115987. The next prime is 61116007. The reversal of 61116001 is 10061116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60824401 + 291600 = 7799^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 61116001 - 2⁹ = 61115489 is a prime.

It is not a weakly prime, because it can be changed into another prime (61116007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30558000 + 30558001.

It is an arithmetic number, because the mean of its divisors is an integer number (30558001).

Almost surely, 2^61116001 is an apocalyptic number.

It is an amenable number.

61116001 is a deficient number, since it is larger than the sum of its proper divisors (1).

61116001 is an equidigital number, since it uses as much as digits as its factorization.

61116001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 61116001 is about 7817.6723517937. The cubic root of 61116001 is about 393.8990890530.

Adding to 61116001 its reverse (10061116), we get a palindrome (71177117).

The spelling of 61116001 in words is "sixty-one million, one hundred sixteen thousand, one".