55678480 has 160 divisors (see below), whose sum is σ = 157989888. Its totient is φ = 17971200.

The previous prime is 55678459. The next prime is 55678499. The reversal of 55678480 is 8487655.

It is a super-2 number, since 2×55678480² = 6200186270220800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354562 + ... + 354718.

Almost surely, 2^55678480 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 55678480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78994944).

55678480 is an abundant number, since it is smaller than the sum of its proper divisors (102311408).

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

55678480 is a wasteful number, since it uses less digits than its factorization.

55678480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 55678480 is about 7461.8013910851. The cubic root of 55678480 is about 381.8526335985.

The spelling of 55678480 in words is "fifty-five million, six hundred seventy-eight thousand, four hundred eighty".