116051561 has 2 divisors, whose sum is σ = 116051562. Its totient is φ = 116051560.

The previous prime is 116051549. The next prime is 116051567. The reversal of 116051561 is 165150611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109599961 + 6451600 = 10469^2 + 2540^2 .

It is an emirp because it is prime and its reverse (165150611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116051561 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116051561.

It is not a weakly prime, because it can be changed into another prime (116051567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58025780 + 58025781.

It is an arithmetic number, because the mean of its divisors is an integer number (58025781).

Almost surely, 2^116051561 is an apocalyptic number.

It is an amenable number.

116051561 is a deficient number, since it is larger than the sum of its proper divisors (1).

116051561 is an equidigital number, since it uses as much as digits as its factorization.

116051561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 116051561 is about 10772.7230076708. The cubic root of 116051561 is about 487.7721448702.

The spelling of 116051561 in words is "one hundred sixteen million, fifty-one thousand, five hundred sixty-one".