61078550 has 24 divisors (see below), whose sum is σ = 122346336. Its totient is φ = 22551840.

The previous prime is 61078543. The next prime is 61078579. The reversal of 61078550 is 5587016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46334 + ... + 47633.

It is an arithmetic number, because the mean of its divisors is an integer number (5097764).

Almost surely, 2^61078550 is an apocalyptic number.

61078550 is an abundant number, since it is smaller than the sum of its proper divisors (61267786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61078550 is a wasteful number, since it uses less digits than its factorization.

61078550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93992 (or 93987 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 61078550 is about 7815.2767065536. The cubic root of 61078550 is about 393.8186140611.

The spelling of 61078550 in words is "sixty-one million, seventy-eight thousand, five hundred fifty".