495021783 has 4 divisors (see below), whose sum is σ = 660029048. Its totient is φ = 330014520.

The previous prime is 495021757. The next prime is 495021799. The reversal of 495021783 is 387120594.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 495021783 - 2¹³ = 495013591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495021083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82503628 + ... + 82503633.

It is an arithmetic number, because the mean of its divisors is an integer number (165007262).

Almost surely, 2^495021783 is an apocalyptic number.

495021783 is a deficient number, since it is larger than the sum of its proper divisors (165007265).

495021783 is a wasteful number, since it uses less digits than its factorization.

495021783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165007264.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 495021783 is about 22249.0849924216. The cubic root of 495021783 is about 791.0575927822.

The spelling of 495021783 in words is "four hundred ninety-five million, twenty-one thousand, seven hundred eighty-three".