5215805281 has 8 divisors (see below), whose sum is σ = 5258484000. Its totient is φ = 5173200480.

The previous prime is 5215805263. The next prime is 5215805299. The reversal of 5215805281 is 1825085125.

It is an interprime number because it is at equal distance from previous prime (5215805263) and next prime (5215805299).

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 5215805281 - 2⁵ = 5215805249 is a prime.

It is a super-2 number, since 2×5215805281² = 54409249458614977922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5215805281.

It is not an unprimeable number, because it can be changed into a prime (5215805081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127926 + ... + 163696.

It is an arithmetic number, because the mean of its divisors is an integer number (657310500).

Almost surely, 2^5215805281 is an apocalyptic number.

It is an amenable number.

5215805281 is a deficient number, since it is larger than the sum of its proper divisors (42678719).

5215805281 is a wasteful number, since it uses less digits than its factorization.

5215805281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36959.

The product of its (nonzero) digits is 32000, while the sum is 37.

The square root of 5215805281 is about 72220.5322674930. The cubic root of 5215805281 is about 1734.2317112631.

The spelling of 5215805281 in words is "five billion, two hundred fifteen million, eight hundred five thousand, two hundred eighty-one".