505559994 has 8 divisors (see below), whose sum is σ = 1011120000. Its totient is φ = 168519996.

The previous prime is 505559993. The next prime is 505560007. The reversal of 505559994 is 499955505.

It is a sphenic number, since it is the product of 3 distinct primes.

505559994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (505559993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42129994 + ... + 42130005.

It is an arithmetic number, because the mean of its divisors is an integer number (126390000).

Almost surely, 2^505559994 is an apocalyptic number.

505559994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

505559994 is a wasteful number, since it uses less digits than its factorization.

505559994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84260004.

The product of its (nonzero) digits is 1822500, while the sum is 51.

The square root of 505559994 is about 22484.6613049875. The cubic root of 505559994 is about 796.6316680372.

The spelling of 505559994 in words is "five hundred five million, five hundred fifty-nine thousand, nine hundred ninety-four".