5280661857 has 8 divisors (see below), whose sum is σ = 7041241440. Its totient is φ = 3520261760.

The previous prime is 5280661843. The next prime is 5280661889. The reversal of 5280661857 is 7581660825.

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 5280661857 - 2¹² = 5280657761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5280661807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56494 + ... + 117272.

It is an arithmetic number, because the mean of its divisors is an integer number (880155180).

Almost surely, 2^5280661857 is an apocalyptic number.

It is an amenable number.

5280661857 is a deficient number, since it is larger than the sum of its proper divisors (1760579583).

5280661857 is a wasteful number, since it uses less digits than its factorization.

5280661857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89743.

The product of its (nonzero) digits is 806400, while the sum is 48.

The square root of 5280661857 is about 72668.1626092197. The cubic root of 5280661857 is about 1741.3902942353.

The spelling of 5280661857 in words is "five billion, two hundred eighty million, six hundred sixty-one thousand, eight hundred fifty-seven".