54221040 has 60 divisors (see below), whose sum is σ = 182094744. Its totient is φ = 14458752.

The previous prime is 54221029. The next prime is 54221047. The reversal of 54221040 is 4012245.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54221047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36934 + ... + 38373.

Almost surely, 2^54221040 is an apocalyptic number.

It is an amenable number.

54221040 is an abundant number, since it is smaller than the sum of its proper divisors (127873704).

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

54221040 is a wasteful number, since it uses less digits than its factorization.

54221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75326 (or 75317 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 54221040 is about 7363.4937359924. The cubic root of 54221040 is about 378.4913405657.

Adding to 54221040 its reverse (4012245), we get a palindrome (58233285).

The spelling of 54221040 in words is "fifty-four million, two hundred twenty-one thousand, forty".