505129954 has 16 divisors (see below), whose sum is σ = 867081600. Its totient is φ = 216198144.

The previous prime is 505129943. The next prime is 505129967. The reversal of 505129954 is 459921505.

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 7 ways as a sum of consecutive naturals, for example, 12694 + ... + 34225.

It is an arithmetic number, because the mean of its divisors is an integer number (54192600).

Almost surely, 2^505129954 is an apocalyptic number.

505129954 is a deficient number, since it is larger than the sum of its proper divisors (361951646).

505129954 is a wasteful number, since it uses less digits than its factorization.

505129954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47697.

The product of its (nonzero) digits is 81000, while the sum is 40.

The square root of 505129954 is about 22475.0963068014. The cubic root of 505129954 is about 796.4057267254.

The spelling of 505129954 in words is "five hundred five million, one hundred twenty-nine thousand, nine hundred fifty-four".