54778380 has 24 divisors (see below), whose sum is σ = 153379632. Its totient is φ = 14607552.

The previous prime is 54778379. The next prime is 54778391. The reversal of 54778380 is 8387745.

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, 456427 + ... + 456546.

It is an arithmetic number, because the mean of its divisors is an integer number (6390818).

Almost surely, 2^54778380 is an apocalyptic number.

It is an amenable number.

54778380 is an abundant number, since it is smaller than the sum of its proper divisors (98601252).

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

54778380 is a wasteful number, since it uses less digits than its factorization.

54778380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912985 (or 912983 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 54778380 is about 7401.2417877002. The cubic root of 54778380 is about 379.7837643263.

The spelling of 54778380 in words is "fifty-four million, seven hundred seventy-eight thousand, three hundred eighty".