54463440 has 80 divisors (see below), whose sum is σ = 169685568. Its totient is φ = 14450688.

The previous prime is 54463433. The next prime is 54463441. The reversal of 54463440 is 4436445.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 54463398 and 54463407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54463441) 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, 61239 + ... + 62121.

Almost surely, 2^54463440 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 54463440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84842784).

54463440 is an abundant number, since it is smaller than the sum of its proper divisors (115222128).

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

54463440 is a wasteful number, since it uses less digits than its factorization.

54463440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1150 counting only the distinct ones).

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

The square root of 54463440 is about 7379.9349590630. The cubic root of 54463440 is about 379.0545285796.

Adding to 54463440 its reverse (4436445), we get a palindrome (58899885).

The spelling of 54463440 in words is "fifty-four million, four hundred sixty-three thousand, four hundred forty".