54665920 has 56 divisors (see below), whose sum is σ = 131216400. Its totient is φ = 21691392.

The previous prime is 54665881. The next prime is 54665921. The reversal of 54665920 is 2956645.

It is a self number, because there is not a number n which added to its sum of digits gives 54665920.

It is not an unprimeable number, because it can be changed into a prime (54665921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43866 + ... + 45094.

It is an arithmetic number, because the mean of its divisors is an integer number (2343150).

Almost surely, 2^54665920 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 54665920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65608200).

54665920 is an abundant number, since it is smaller than the sum of its proper divisors (76550480).

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

54665920 is a wasteful number, since it uses less digits than its factorization.

54665920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 54665920 is about 7393.6405106010. The cubic root of 54665920 is about 379.5236876091.

It can be divided in two parts, 546 and 65920, that added together give a palindrome (66466).

The spelling of 54665920 in words is "fifty-four million, six hundred sixty-five thousand, nine hundred twenty".