61078555 has 8 divisors (see below), whose sum is σ = 73437552. Its totient is φ = 48767328.

The previous prime is 61078543. The next prime is 61078579. The reversal of 61078555 is 55587016.

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 61078555 - 2¹⁷ = 60947483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9064 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (9179694).

Almost surely, 2^61078555 is an apocalyptic number.

61078555 is a deficient number, since it is larger than the sum of its proper divisors (12358997).

61078555 is a wasteful number, since it uses less digits than its factorization.

61078555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23885.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 61078555 is about 7815.2770264399. The cubic root of 61078555 is about 393.8186248073.

The spelling of 61078555 in words is "sixty-one million, seventy-eight thousand, five hundred fifty-five".