505540254 has 32 divisors (see below), whose sum is σ = 1076781600. Its totient is φ = 157678592.

The previous prime is 505540223. The next prime is 505540283. The reversal of 505540254 is 452045505.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3322 + ... + 31970.

It is an arithmetic number, because the mean of its divisors is an integer number (33649425).

Almost surely, 2^505540254 is an apocalyptic number.

505540254 is an abundant number, since it is smaller than the sum of its proper divisors (571241346).

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

505540254 is a wasteful number, since it uses less digits than its factorization.

505540254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28844.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 505540254 is about 22484.2223347840. Note that the first 3 decimals coincide. The cubic root of 505540254 is about 796.6212995257.

Adding to 505540254 its reverse (452045505), we get a palindrome (957585759).

The spelling of 505540254 in words is "five hundred five million, five hundred forty thousand, two hundred fifty-four".