61116555 has 8 divisors (see below), whose sum is σ = 97786512. Its totient is φ = 32595488.

The previous prime is 61116551. The next prime is 61116557. The reversal of 61116555 is 55561116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61116555 - 2² = 61116551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61116551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037204 + ... + 2037233.

It is an arithmetic number, because the mean of its divisors is an integer number (12223314).

Almost surely, 2^61116555 is an apocalyptic number.

61116555 is a deficient number, since it is larger than the sum of its proper divisors (36669957).

61116555 is a wasteful number, since it uses less digits than its factorization.

61116555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074445.

The product of its digits is 4500, while the sum is 30.

The square root of 61116555 is about 7817.7077842549. The cubic root of 61116555 is about 393.9002792456.

The spelling of 61116555 in words is "sixty-one million, one hundred sixteen thousand, five hundred fifty-five".