505617450 has 96 divisors (see below), whose sum is σ = 1355913216. Its totient is φ = 123951360.

The previous prime is 505617449. The next prime is 505617461. The reversal of 505617450 is 54716505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 746512 + ... + 747188.

It is an arithmetic number, because the mean of its divisors is an integer number (14124096).

Almost surely, 2^505617450 is an apocalyptic number.

505617450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 505617450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677956608).

505617450 is an abundant number, since it is smaller than the sum of its proper divisors (850295766).

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

505617450 is a wasteful number, since it uses less digits than its factorization.

505617450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 505617450 is about 22485.9389397019. The cubic root of 505617450 is about 796.6618454878.

The spelling of 505617450 in words is "five hundred five million, six hundred seventeen thousand, four hundred fifty".