61055511 has 12 divisors (see below), whose sum is σ = 89481336. Its totient is φ = 37003120.

The previous prime is 61055507. The next prime is 61055539. The reversal of 61055511 is 11555016.

61055511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61055511 - 2² = 61055507 is a prime.

It is a super-2 number, since 2×61055511² = 7455550846942242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055011) 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 in 11 ways as a sum of consecutive naturals, for example, 83736 + ... + 84461.

It is an arithmetic number, because the mean of its divisors is an integer number (7456778).

Almost surely, 2^61055511 is an apocalyptic number.

61055511 is a deficient number, since it is larger than the sum of its proper divisors (28425825).

61055511 is a wasteful number, since it uses less digits than its factorization.

61055511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168222 (or 168211 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 61055511 is about 7813.8025954077. The cubic root of 61055511 is about 393.7690913394.

The spelling of 61055511 in words is "sixty-one million, fifty-five thousand, five hundred eleven".