5166556061 has 2 divisors, whose sum is σ = 5166556062. Its totient is φ = 5166556060.

The previous prime is 5166556009. The next prime is 5166556063. The reversal of 5166556061 is 1606556615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3035348836 + 2131207225 = 55094^2 + 46165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5166556061 is a prime.

Together with 5166556063, 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 (5166556063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583278030 + 2583278031.

It is an arithmetic number, because the mean of its divisors is an integer number (2583278031).

Almost surely, 2^5166556061 is an apocalyptic number.

It is an amenable number.

5166556061 is a deficient number, since it is larger than the sum of its proper divisors (1).

5166556061 is an equidigital number, since it uses as much as digits as its factorization.

5166556061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 5166556061 is about 71878.7594564625. The cubic root of 5166556061 is about 1728.7560595612.

The spelling of 5166556061 in words is "five billion, one hundred sixty-six million, five hundred fifty-six thousand, sixty-one".