55768860 has 108 divisors (see below), whose sum is σ = 196815528. Its totient is φ = 12745152.

The previous prime is 55768849. The next prime is 55768871. The reversal of 55768860 is 6886755.

It is an interprime number because it is at equal distance from previous prime (55768849) and next prime (55768871).

It is a super-2 number, since 2×55768860² = 6220331491399200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5659 + ... + 11981.

It is an arithmetic number, because the mean of its divisors is an integer number (1822366).

Almost surely, 2^55768860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55768860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98407764).

55768860 is an abundant number, since it is smaller than the sum of its proper divisors (141046668).

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

55768860 is a wasteful number, since it uses less digits than its factorization.

55768860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352 (or 6340 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 55768860 is about 7467.8551137525. The cubic root of 55768860 is about 382.0591357880.

The spelling of 55768860 in words is "fifty-five million, seven hundred sixty-eight thousand, eight hundred sixty".