61051655 has 16 divisors (see below), whose sum is σ = 88135680. Its totient is φ = 39660192.

The previous prime is 61051651. The next prime is 61051657. The reversal of 61051655 is 55615016.

61051655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61051655 - 2² = 61051651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61051651) 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 15 ways as a sum of consecutive naturals, for example, 45239 + ... + 46568.

It is an arithmetic number, because the mean of its divisors is an integer number (5508480).

Almost surely, 2^61051655 is an apocalyptic number.

61051655 is a deficient number, since it is larger than the sum of its proper divisors (27084025).

61051655 is a wasteful number, since it uses less digits than its factorization.

61051655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91838.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 61051655 is about 7813.5558486518. Note that the first 3 decimals coincide. The cubic root of 61051655 is about 393.7608015849.

The spelling of 61051655 in words is "sixty-one million, fifty-one thousand, six hundred fifty-five".