505899145 has 8 divisors (see below), whose sum is σ = 633473856. Its totient is φ = 387122736.

The previous prime is 505899139. The next prime is 505899161. The reversal of 505899145 is 541998505.

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

It is a cyclic number.

It is not a de Polignac number, because 505899145 - 2¹⁵ = 505866377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505899095 and 505899104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2199447 + ... + 2199676.

It is an arithmetic number, because the mean of its divisors is an integer number (79184232).

Almost surely, 2^505899145 is an apocalyptic number.

It is an amenable number.

505899145 is a deficient number, since it is larger than the sum of its proper divisors (127574711).

505899145 is a wasteful number, since it uses less digits than its factorization.

505899145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4399151.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 505899145 is about 22492.2018708707. The cubic root of 505899145 is about 796.8097662760.

The spelling of 505899145 in words is "five hundred five million, eight hundred ninety-nine thousand, one hundred forty-five".