505317874 has 4 divisors (see below), whose sum is σ = 757976814. Its totient is φ = 252658936.

The previous prime is 505317871. The next prime is 505317931. The reversal of 505317874 is 478713505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 478713505 = 5 ⋅95742701.

It can be written as a sum of positive squares in only one way, i.e., 446688225 + 58629649 = 21135^2 + 7657^2 .

It is not an unprimeable number, because it can be changed into a prime (505317871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126329467 + ... + 126329470.

Almost surely, 2^505317874 is an apocalyptic number.

505317874 is a deficient number, since it is larger than the sum of its proper divisors (252658940).

505317874 is a wasteful number, since it uses less digits than its factorization.

505317874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252658939.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 505317874 is about 22479.2765452983. The cubic root of 505317874 is about 796.5044749173.

The spelling of 505317874 in words is "five hundred five million, three hundred seventeen thousand, eight hundred seventy-four".