28054501 has 2 divisors, whose sum is σ = 28054502. Its totient is φ = 28054500.

The previous prime is 28054493. The next prime is 28054511. The reversal of 28054501 is 10545082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15444900 + 12609601 = 3930^2 + 3551^2 .

It is a cyclic number.

It is not a de Polignac number, because 28054501 - 2³ = 28054493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28054511) 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 as a sum of consecutive naturals, namely, 14027250 + 14027251.

It is an arithmetic number, because the mean of its divisors is an integer number (14027251).

Almost surely, 2^28054501 is an apocalyptic number.

It is an amenable number.

28054501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28054501 is an equidigital number, since it uses as much as digits as its factorization.

28054501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 28054501 is about 5296.6499789962. The cubic root of 28054501 is about 303.8557898940.

Adding to 28054501 its reverse (10545082), we get a palindrome (38599583).

The spelling of 28054501 in words is "twenty-eight million, fifty-four thousand, five hundred one".