285057029 has 2 divisors, whose sum is σ = 285057030. Its totient is φ = 285057028.

The previous prime is 285057011. The next prime is 285057053. The reversal of 285057029 is 920750582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245392225 + 39664804 = 15665^2 + 6298^2 .

It is a cyclic number.

It is not a de Polignac number, because 285057029 - 2²⁸ = 16621573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 285056983 and 285057001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285057229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142528514 + 142528515.

It is an arithmetic number, because the mean of its divisors is an integer number (142528515).

Almost surely, 2^285057029 is an apocalyptic number.

It is an amenable number.

285057029 is a deficient number, since it is larger than the sum of its proper divisors (1).

285057029 is an equidigital number, since it uses as much as digits as its factorization.

285057029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 285057029 is about 16883.6319848544. The cubic root of 285057029 is about 658.1283282134.

The spelling of 285057029 in words is "two hundred eighty-five million, fifty-seven thousand, twenty-nine".