505994113 has 4 divisors (see below), whose sum is σ = 506041668. Its totient is φ = 505946560.

The previous prime is 505994101. The next prime is 505994141. The reversal of 505994113 is 311499505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 57274624 + 448719489 = 7568^2 + 21183^2 .

It is a cyclic number.

It is not a de Polignac number, because 505994113 - 2⁵ = 505994081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505994413) 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, 333 + ... + 31813.

It is an arithmetic number, because the mean of its divisors is an integer number (126510417).

Almost surely, 2^505994113 is an apocalyptic number.

It is an amenable number.

505994113 is a deficient number, since it is larger than the sum of its proper divisors (47555).

505994113 is a wasteful number, since it uses less digits than its factorization.

505994113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47554.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 505994113 is about 22494.3129034874. The cubic root of 505994113 is about 796.8596225211.

The spelling of 505994113 in words is "five hundred five million, nine hundred ninety-four thousand, one hundred thirteen".