28094551 has 2 divisors, whose sum is σ = 28094552. Its totient is φ = 28094550.

The previous prime is 28094537. The next prime is 28094603. The reversal of 28094551 is 15549082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28094551 - 2⁵ = 28094519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28094531) 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, 14047275 + 14047276.

It is an arithmetic number, because the mean of its divisors is an integer number (14047276).

Almost surely, 2^28094551 is an apocalyptic number.

28094551 is a deficient number, since it is larger than the sum of its proper divisors (1).

28094551 is an equidigital number, since it uses as much as digits as its factorization.

28094551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 28094551 is about 5300.4293222342. The cubic root of 28094551 is about 304.0003137982. Note that the first 3 decimals are identical.

The spelling of 28094551 in words is "twenty-eight million, ninety-four thousand, five hundred fifty-one".