54643440 has 160 divisors (see below), whose sum is σ = 183202560. Its totient is φ = 13422592.

The previous prime is 54643439. The next prime is 54643451. The reversal of 54643440 is 4434645.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 54643398 and 54643407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240607 + ... + 240833.

It is an arithmetic number, because the mean of its divisors is an integer number (1145016).

Almost surely, 2^54643440 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 54643440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91601280).

54643440 is an abundant number, since it is smaller than the sum of its proper divisors (128559120).

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

54643440 is a wasteful number, since it uses less digits than its factorization.

54643440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 54643440 is about 7392.1201288940. The cubic root of 54643440 is about 379.4716572506.

The spelling of 54643440 in words is "fifty-four million, six hundred forty-three thousand, four hundred forty".