54212640 has 96 divisors (see below), whose sum is σ = 174073536. Its totient is φ = 14177280.

The previous prime is 54212603. The next prime is 54212657. The reversal of 54212640 is 4621245.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 54212640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24375 + ... + 26505.

It is an arithmetic number, because the mean of its divisors is an integer number (1813266).

Almost surely, 2^54212640 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 54212640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87036768).

54212640 is an abundant number, since it is smaller than the sum of its proper divisors (119860896).

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

54212640 is a wasteful number, since it uses less digits than its factorization.

54212640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 54212640 is about 7362.9233324815. The cubic root of 54212640 is about 378.4717940854.

Adding to 54212640 its reverse (4621245), we get a palindrome (58833885).

The spelling of 54212640 in words is "fifty-four million, two hundred twelve thousand, six hundred forty".