54817780 has 12 divisors (see below), whose sum is σ = 115117380. Its totient is φ = 21927104.

The previous prime is 54817747. The next prime is 54817781. The reversal of 54817780 is 8771845.

It can be written as a sum of positive squares in 2 ways, for example, as 17338896 + 37478884 = 4164^2 + 6122^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54817781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370425 + ... + 1370464.

It is an arithmetic number, because the mean of its divisors is an integer number (9593115).

Almost surely, 2^54817780 is an apocalyptic number.

It is an amenable number.

54817780 is an abundant number, since it is smaller than the sum of its proper divisors (60299600).

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

54817780 is a wasteful number, since it uses less digits than its factorization.

54817780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740898 (or 2740896 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 54817780 is about 7403.9030247566. The cubic root of 54817780 is about 379.8747971644.

The spelling of 54817780 in words is "fifty-four million, eight hundred seventeen thousand, seven hundred eighty".