505241990 has 32 divisors (see below), whose sum is σ = 993063456. Its totient is φ = 183548160.

The previous prime is 505241983. The next prime is 505242011. The reversal of 505241990 is 99142505.

It is a self number, because there is not a number n which added to its sum of digits gives 505241990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184874 + ... + 187586.

It is an arithmetic number, because the mean of its divisors is an integer number (31033233).

Almost surely, 2^505241990 is an apocalyptic number.

505241990 is a deficient number, since it is larger than the sum of its proper divisors (487821466).

505241990 is a wasteful number, since it uses less digits than its factorization.

505241990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 505241990 is about 22477.5886162195. The cubic root of 505241990 is about 796.4646023444.

The spelling of 505241990 in words is "five hundred five million, two hundred forty-one thousand, nine hundred ninety".