611151061 has 2 divisors, whose sum is σ = 611151062. Its totient is φ = 611151060.

The previous prime is 611151049. The next prime is 611151077. The reversal of 611151061 is 160151116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604422225 + 6728836 = 24585^2 + 2594^2 .

It is a cyclic number.

It is not a de Polignac number, because 611151061 - 2¹¹ = 611149013 is a prime.

It is a super-2 number, since 2×611151061² = 747011238722851442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611151091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305575530 + 305575531.

It is an arithmetic number, because the mean of its divisors is an integer number (305575531).

Almost surely, 2^611151061 is an apocalyptic number.

It is an amenable number.

611151061 is a deficient number, since it is larger than the sum of its proper divisors (1).

611151061 is an equidigital number, since it uses as much as digits as its factorization.

611151061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 611151061 is about 24721.4696367348. The cubic root of 611151061 is about 848.6257197452.

The spelling of 611151061 in words is "six hundred eleven million, one hundred fifty-one thousand, sixty-one".