505535890 has 8 divisors (see below), whose sum is σ = 909964620. Its totient is φ = 202214352.

The previous prime is 505535881. The next prime is 505535903. The reversal of 505535890 is 98535505.

It can be written as a sum of positive squares in 2 ways, for example, as 488454201 + 17081689 = 22101^2 + 4133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25276785 + ... + 25276804.

Almost surely, 2^505535890 is an apocalyptic number.

505535890 is a deficient number, since it is larger than the sum of its proper divisors (404428730).

505535890 is a wasteful number, since it uses less digits than its factorization.

505535890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50553596.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 505535890 is about 22484.1252887454. The cubic root of 505535890 is about 796.6190072814.

The spelling of 505535890 in words is "five hundred five million, five hundred thirty-five thousand, eight hundred ninety".