505254636 has 18 divisors (see below), whose sum is σ = 1277171532. Its totient is φ = 168418200.

The previous prime is 505254623. The next prime is 505254661. The reversal of 505254636 is 636452505.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 14034851 = 505254636 / (5 + 0 + 5 + 2 + 5 + 4 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 505254636.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7017390 + ... + 7017461.

It is an arithmetic number, because the mean of its divisors is an integer number (70953974).

Almost surely, 2^505254636 is an apocalyptic number.

It is an amenable number.

505254636 is an abundant number, since it is smaller than the sum of its proper divisors (771916896).

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

505254636 is a wasteful number, since it uses less digits than its factorization.

505254636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034861 (or 14034856 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 505254636 is about 22477.8699168760. The cubic root of 505254636 is about 796.4712473499.

The spelling of 505254636 in words is "five hundred five million, two hundred fifty-four thousand, six hundred thirty-six".