54857780 has 12 divisors (see below), whose sum is σ = 115201380. Its totient is φ = 21943104.

The previous prime is 54857773. The next prime is 54857819. The reversal of 54857780 is 8775845.

It can be written as a sum of positive squares in 2 ways, for example, as 38390416 + 16467364 = 6196^2 + 4058^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371425 + ... + 1371464.

It is an arithmetic number, because the mean of its divisors is an integer number (9600115).

Almost surely, 2^54857780 is an apocalyptic number.

It is an amenable number.

54857780 is an abundant number, since it is smaller than the sum of its proper divisors (60343600).

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

54857780 is a wasteful number, since it uses less digits than its factorization.

54857780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742898 (or 2742896 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 54857780 is about 7406.6038101143. The cubic root of 54857780 is about 379.9671716793.

The spelling of 54857780 in words is "fifty-four million, eight hundred fifty-seven thousand, seven hundred eighty".