54062721 has 10 divisors (see below), whose sum is σ = 80760482. Its totient is φ = 36041760.

The previous prime is 54062711. The next prime is 54062731. The reversal of 54062721 is 12726045.

54062721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (54062711) and next prime (54062731).

It can be written as a sum of positive squares in only one way, i.e., 52359696 + 1703025 = 7236^2 + 1305^2 .

It is not a de Polignac number, because 54062721 - 2⁵ = 54062689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54062711) 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 9 ways as a sum of consecutive naturals, for example, 333640 + ... + 333801.

Almost surely, 2^54062721 is an apocalyptic number.

It is an amenable number.

54062721 is a deficient number, since it is larger than the sum of its proper divisors (26697761).

54062721 is an equidigital number, since it uses as much as digits as its factorization.

54062721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667453 (or 667444 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 54062721 is about 7352.7356133619. The cubic root of 54062721 is about 378.1225981770.

Adding to 54062721 its reverse (12726045), we get a palindrome (66788766).

The spelling of 54062721 in words is "fifty-four million, sixty-two thousand, seven hundred twenty-one".