54212621 has 4 divisors (see below), whose sum is σ = 54771612. Its totient is φ = 53653632.

The previous prime is 54212603. The next prime is 54212657. The reversal of 54212621 is 12621245.

It is a happy number.

54212621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9523396 + 44689225 = 3086^2 + 6685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54212621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54212671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279350 + ... + 279543.

It is an arithmetic number, because the mean of its divisors is an integer number (13692903).

Almost surely, 2^54212621 is an apocalyptic number.

It is an amenable number.

54212621 is a deficient number, since it is larger than the sum of its proper divisors (558991).

54212621 is an equidigital number, since it uses as much as digits as its factorization.

54212621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558990.

The product of its digits is 960, while the sum is 23.

The square root of 54212621 is about 7362.9220422330. The cubic root of 54212621 is about 378.4717498709.

Adding to 54212621 its reverse (12621245), we get a palindrome (66833866).

The spelling of 54212621 in words is "fifty-four million, two hundred twelve thousand, six hundred twenty-one".