505612290 has 32 divisors (see below), whose sum is σ = 1214455680. Its totient is φ = 134720384.

The previous prime is 505612267. The next prime is 505612297. The reversal of 505612290 is 92216505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (505612297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34846 + ... + 47174.

It is an arithmetic number, because the mean of its divisors is an integer number (37951740).

Almost surely, 2^505612290 is an apocalyptic number.

505612290 is an abundant number, since it is smaller than the sum of its proper divisors (708843390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505612290 is a wasteful number, since it uses less digits than its factorization.

505612290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13706.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 505612290 is about 22485.8242010383. The cubic root of 505612290 is about 796.6591354092.

Adding to 505612290 its reverse (92216505), we get a palindrome (597828795).

The spelling of 505612290 in words is "five hundred five million, six hundred twelve thousand, two hundred ninety".