54728231 has 2 divisors, whose sum is σ = 54728232. Its totient is φ = 54728230.

The previous prime is 54728221. The next prime is 54728239. The reversal of 54728231 is 13282745.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54728231 - 2¹⁰ = 54727207 is a prime.

It is a super-2 number, since 2×54728231² = 5990358536778722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54728239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27364115 + 27364116.

It is an arithmetic number, because the mean of its divisors is an integer number (27364116).

Almost surely, 2^54728231 is an apocalyptic number.

54728231 is a deficient number, since it is larger than the sum of its proper divisors (1).

54728231 is an equidigital number, since it uses as much as digits as its factorization.

54728231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 32.

The square root of 54728231 is about 7397.8531345249. The cubic root of 54728231 is about 379.6678329983.

The spelling of 54728231 in words is "fifty-four million, seven hundred twenty-eight thousand, two hundred thirty-one".