56661078 has 32 divisors (see below), whose sum is σ = 119629440. Its totient is φ = 17841600.

The previous prime is 56661061. The next prime is 56661079. The reversal of 56661078 is 87016665.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56661079) 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 15 ways as a sum of consecutive naturals, for example, 68101 + ... + 68927.

It is an arithmetic number, because the mean of its divisors is an integer number (3738420).

Almost surely, 2^56661078 is an apocalyptic number.

56661078 is an abundant number, since it is smaller than the sum of its proper divisors (62968362).

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

56661078 is a wasteful number, since it uses less digits than its factorization.

56661078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 56661078 is about 7527.3553124587. The cubic root of 56661078 is about 384.0858233736.

The spelling of 56661078 in words is "fifty-six million, six hundred sixty-one thousand, seventy-eight".