5251336605 has 24 divisors (see below), whose sum is σ = 9395942400. Its totient is φ = 2710366560.

The previous prime is 5251336579. The next prime is 5251336681. The reversal of 5251336605 is 5066331525.

5251336605 is a `hidden beast` number, since 5 + 2 + 5 + 13 + 36 + 605 = 666.

It is not a de Polignac number, because 5251336605 - 2¹² = 5251332509 is a prime.

It is a super-2 number, since 2×5251336605² = 55153072278025852050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5251336605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1880805 + ... + 1883594.

It is an arithmetic number, because the mean of its divisors is an integer number (391497600).

Almost surely, 2^5251336605 is an apocalyptic number.

It is an amenable number.

5251336605 is a deficient number, since it is larger than the sum of its proper divisors (4144605795).

5251336605 is a wasteful number, since it uses less digits than its factorization.

5251336605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3764441 (or 3764438 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 5251336605 is about 72466.1065947385. The cubic root of 5251336605 is about 1738.1608043596.

The spelling of 5251336605 in words is "five billion, two hundred fifty-one million, three hundred thirty-six thousand, six hundred five".