54564440 has 128 divisors (see below), whose sum is σ = 148176000. Its totient is φ = 18063360.

The previous prime is 54564383. The next prime is 54564467. The reversal of 54564440 is 4446545.

It is a super-2 number, since 2×54564440² = 5954556225027200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54564397 and 54564406.

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, 562472 + ... + 562568.

It is an arithmetic number, because the mean of its divisors is an integer number (1157625).

Almost surely, 2^54564440 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 54564440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74088000).

54564440 is an abundant number, since it is smaller than the sum of its proper divisors (93611560).

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

54564440 is a wasteful number, since it uses less digits than its factorization.

54564440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 54564440 is about 7386.7746682839. The cubic root of 54564440 is about 379.2886970794.

The spelling of 54564440 in words is "fifty-four million, five hundred sixty-four thousand, four hundred forty".