285056497 has 4 divisors (see below), whose sum is σ = 310970736. Its totient is φ = 259142260.

The previous prime is 285056491. The next prime is 285056507. The reversal of 285056497 is 794650582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 285056497 - 2²³ = 276667889 is a prime.

It is a super-2 number, since 2×285056497² = 162514412963822018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285056491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12957103 + ... + 12957124.

It is an arithmetic number, because the mean of its divisors is an integer number (77742684).

Almost surely, 2^285056497 is an apocalyptic number.

It is an amenable number.

285056497 is a deficient number, since it is larger than the sum of its proper divisors (25914239).

285056497 is a wasteful number, since it uses less digits than its factorization.

285056497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25914238.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 285056497 is about 16883.6162299432. The cubic root of 285056497 is about 658.1279187930.

The spelling of 285056497 in words is "two hundred eighty-five million, fifty-six thousand, four hundred ninety-seven".