116642551 has 2 divisors, whose sum is σ = 116642552. Its totient is φ = 116642550.

The previous prime is 116642543. The next prime is 116642569. The reversal of 116642551 is 155246611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116642551 - 2³ = 116642543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116642521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58321275 + 58321276.

It is an arithmetic number, because the mean of its divisors is an integer number (58321276).

Almost surely, 2^116642551 is an apocalyptic number.

116642551 is a deficient number, since it is larger than the sum of its proper divisors (1).

116642551 is an equidigital number, since it uses as much as digits as its factorization.

116642551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 116642551 is about 10800.1181012061. The cubic root of 116642551 is about 488.5987329361.

The spelling of 116642551 in words is "one hundred sixteen million, six hundred forty-two thousand, five hundred fifty-one".