54728261 has 4 divisors (see below), whose sum is σ = 62546592. Its totient is φ = 46909932.

The previous prime is 54728243. The next prime is 54728279. The reversal of 54728261 is 16282745.

54728261 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16282745 = 5 ⋅3256549.

It is an interprime number because it is at equal distance from previous prime (54728243) and next prime (54728279).

It is a cyclic number.

It is not a de Polignac number, because 54728261 - 2¹⁰ = 54727237 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 (54728221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3909155 + ... + 3909168.

It is an arithmetic number, because the mean of its divisors is an integer number (15636648).

Almost surely, 2^54728261 is an apocalyptic number.

It is an amenable number.

54728261 is a deficient number, since it is larger than the sum of its proper divisors (7818331).

54728261 is an equidigital number, since it uses as much as digits as its factorization.

54728261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7818330.

The product of its digits is 26880, while the sum is 35.

The square root of 54728261 is about 7397.8551621399. The cubic root of 54728261 is about 379.6679023715.

The spelling of 54728261 in words is "fifty-four million, seven hundred twenty-eight thousand, two hundred sixty-one".