616016551 has 2 divisors, whose sum is σ = 616016552. Its totient is φ = 616016550.

The previous prime is 616016549. The next prime is 616016561. The reversal of 616016551 is 155610616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616016551 - 2¹ = 616016549 is a prime.

It is a super-2 number, since 2×616016551² = 758952782211871202, which contains 22 as substring.

Together with 616016549, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616016561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308008275 + 308008276.

It is an arithmetic number, because the mean of its divisors is an integer number (308008276).

Almost surely, 2^616016551 is an apocalyptic number.

616016551 is a deficient number, since it is larger than the sum of its proper divisors (1).

616016551 is an equidigital number, since it uses as much as digits as its factorization.

616016551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 616016551 is about 24819.6807191390. The cubic root of 616016551 is about 850.8717934379.

The spelling of 616016551 in words is "six hundred sixteen million, sixteen thousand, five hundred fifty-one".