54705640 has 64 divisors (see below), whose sum is σ = 135717120. Its totient is φ = 19680000.

The previous prime is 54705619. The next prime is 54705649. The reversal of 54705640 is 4650745.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (54705649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43825 + ... + 45055.

It is an arithmetic number, because the mean of its divisors is an integer number (2120580).

Almost surely, 2^54705640 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 54705640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67858560).

54705640 is an abundant number, since it is smaller than the sum of its proper divisors (81011480).

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

54705640 is a wasteful number, since it uses less digits than its factorization.

54705640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 54705640 is about 7396.3261150385. The cubic root of 54705640 is about 379.6155853965.

The spelling of 54705640 in words is "fifty-four million, seven hundred five thousand, six hundred forty".