54778680 has 320 divisors, whose sum is σ = 211701600. Its totient is φ = 12579840.

The previous prime is 54778673. The next prime is 54778681. The reversal of 54778680 is 8687745.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54778681) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1033534 + ... + 1033586.

Almost surely, 2^54778680 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 54778680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105850800).

54778680 is an abundant number, since it is smaller than the sum of its proper divisors (156922920).

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

54778680 is a wasteful number, since it uses less digits than its factorization.

54778680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 54778680 is about 7401.2620545418. The cubic root of 54778680 is about 379.7844576346.

The spelling of 54778680 in words is "fifty-four million, seven hundred seventy-eight thousand, six hundred eighty".