28777051 has 2 divisors, whose sum is σ = 28777052. Its totient is φ = 28777050.

The previous prime is 28777043. The next prime is 28777069. The reversal of 28777051 is 15077782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28777051 - 2³ = 28777043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28777051.

It is not a weakly prime, because it can be changed into another prime (28777451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14388525 + 14388526.

It is an arithmetic number, because the mean of its divisors is an integer number (14388526).

Almost surely, 2^28777051 is an apocalyptic number.

28777051 is a deficient number, since it is larger than the sum of its proper divisors (1).

28777051 is an equidigital number, since it uses as much as digits as its factorization.

28777051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 28777051 is about 5364.4245730553. The cubic root of 28777051 is about 306.4423344930.

The spelling of 28777051 in words is "twenty-eight million, seven hundred seventy-seven thousand, fifty-one".