611005061 has 2 divisors, whose sum is σ = 611005062. Its totient is φ = 611005060.

The previous prime is 611004971. The next prime is 611005063. The reversal of 611005061 is 160500116.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524868100 + 86136961 = 22910^2 + 9281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611005061 is a prime.

It is a super-2 number, since 2×611005061² = 746654369135227442, which contains 22 as substring.

Together with 611005063, 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 (611005063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305502530 + 305502531.

It is an arithmetic number, because the mean of its divisors is an integer number (305502531).

Almost surely, 2^611005061 is an apocalyptic number.

It is an amenable number.

611005061 is a deficient number, since it is larger than the sum of its proper divisors (1).

611005061 is an equidigital number, since it uses as much as digits as its factorization.

611005061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 611005061 is about 24718.5165614767. The cubic root of 611005061 is about 848.5581373145.

Adding to 611005061 its reverse (160500116), we get a palindrome (771505177).

The spelling of 611005061 in words is "six hundred eleven million, five thousand, sixty-one".