505067905 has 4 divisors (see below), whose sum is σ = 606081492. Its totient is φ = 404054320.

The previous prime is 505067891. The next prime is 505067987. The reversal of 505067905 is 509760505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509760505 = 5 ⋅101952101.

It can be written as a sum of positive squares in 2 ways, for example, as 390299536 + 114768369 = 19756^2 + 10713^2 .

It is not a de Polignac number, because 505067905 - 2¹⁵ = 505035137 is a prime.

It is a super-2 number, since 2×505067905² = 510187177322178050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50506786 + ... + 50506795.

It is an arithmetic number, because the mean of its divisors is an integer number (151520373).

Almost surely, 2^505067905 is an apocalyptic number.

It is an amenable number.

505067905 is a deficient number, since it is larger than the sum of its proper divisors (101013587).

505067905 is a wasteful number, since it uses less digits than its factorization.

505067905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101013586.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 505067905 is about 22473.7158698779. The cubic root of 505067905 is about 796.3731158418.

The spelling of 505067905 in words is "five hundred five million, sixty-seven thousand, nine hundred five".