285394541 has 2 divisors, whose sum is σ = 285394542. Its totient is φ = 285394540.

The previous prime is 285394537. The next prime is 285394547. The reversal of 285394541 is 145493582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200109316 + 85285225 = 14146^2 + 9235^2 .

It is a cyclic number.

It is not a de Polignac number, because 285394541 - 2² = 285394537 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285394547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142697270 + 142697271.

It is an arithmetic number, because the mean of its divisors is an integer number (142697271).

Almost surely, 2^285394541 is an apocalyptic number.

It is an amenable number.

285394541 is a deficient number, since it is larger than the sum of its proper divisors (1).

285394541 is an equidigital number, since it uses as much as digits as its factorization.

285394541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The square root of 285394541 is about 16893.6242707123. The cubic root of 285394541 is about 658.3879705263.

The spelling of 285394541 in words is "two hundred eighty-five million, three hundred ninety-four thousand, five hundred forty-one".