55378560 has 64 divisors (see below), whose sum is σ = 176525280. Its totient is φ = 14767104.

The previous prime is 55378553. The next prime is 55378591. The reversal of 55378560 is 6587355.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12502 + ... + 16341.

Almost surely, 2^55378560 is an apocalyptic number.

It is an amenable number.

55378560 is an abundant number, since it is smaller than the sum of its proper divisors (121146720).

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

55378560 is a wasteful number, since it uses less digits than its factorization.

55378560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28865 (or 28853 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 55378560 is about 7441.6772303023. The cubic root of 55378560 is about 381.1657644231.

The spelling of 55378560 in words is "fifty-five million, three hundred seventy-eight thousand, five hundred sixty".