54323440 has 40 divisors (see below), whose sum is σ = 126621360. Its totient is φ = 21674496.

The previous prime is 54323431. The next prime is 54323441. The reversal of 54323440 is 4432345.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×54323440² = 5902072266867200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54323441) 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, 48972 + ... + 50068.

It is an arithmetic number, because the mean of its divisors is an integer number (3165534).

Almost surely, 2^54323440 is an apocalyptic number.

It is an amenable number.

54323440 is an abundant number, since it is smaller than the sum of its proper divisors (72297920).

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

54323440 is a wasteful number, since it uses less digits than its factorization.

54323440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 54323440 is about 7370.4436772829. The cubic root of 54323440 is about 378.7294593238.

Adding to 54323440 its reverse (4432345), we get a palindrome (58755785).

The spelling of 54323440 in words is "fifty-four million, three hundred twenty-three thousand, four hundred forty".