55560878 has 8 divisors (see below), whose sum is σ = 84150768. Its totient is φ = 27510624.

The previous prime is 55560871. The next prime is 55560881. The reversal of 55560878 is 87806555.

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

It is a super-2 number, since 2×55560878² = 6174022328261768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55560871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134651 + ... + 135062.

It is an arithmetic number, because the mean of its divisors is an integer number (10518846).

Almost surely, 2^55560878 is an apocalyptic number.

55560878 is a deficient number, since it is larger than the sum of its proper divisors (28589890).

55560878 is a wasteful number, since it uses less digits than its factorization.

55560878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269818.

The product of its (nonzero) digits is 336000, while the sum is 44.

The square root of 55560878 is about 7453.9169568758. The cubic root of 55560878 is about 381.5835991513.

The spelling of 55560878 in words is "fifty-five million, five hundred sixty thousand, eight hundred seventy-eight".