285057541 has 2 divisors, whose sum is σ = 285057542. Its totient is φ = 285057540.

The previous prime is 285057533. The next prime is 285057557. The reversal of 285057541 is 145750582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250588900 + 34468641 = 15830^2 + 5871^2 .

It is a cyclic number.

It is not a de Polignac number, because 285057541 - 2³ = 285057533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285057541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285054541) 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, 142528770 + 142528771.

It is an arithmetic number, because the mean of its divisors is an integer number (142528771).

Almost surely, 2^285057541 is an apocalyptic number.

It is an amenable number.

285057541 is a deficient number, since it is larger than the sum of its proper divisors (1).

285057541 is an equidigital number, since it uses as much as digits as its factorization.

285057541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 285057541 is about 16883.6471474619. The cubic root of 285057541 is about 658.1287222416.

It can be divided in two parts, 28505 and 7541, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 285057541 in words is "two hundred eighty-five million, fifty-seven thousand, five hundred forty-one".