5809856257 has 4 divisors (see below), whose sum is σ = 5825687296. Its totient is φ = 5794025220.

The previous prime is 5809856243. The next prime is 5809856279. The reversal of 5809856257 is 7526589085.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7526589085 = 5 ⋅1505317817.

It is a cyclic number.

It is not a de Polignac number, because 5809856257 - 2²³ = 5801467649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5809856198 and 5809856207.

It is not an unprimeable number, because it can be changed into a prime (5809856057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7914969 + ... + 7915702.

It is an arithmetic number, because the mean of its divisors is an integer number (1456421824).

Almost surely, 2^5809856257 is an apocalyptic number.

It is an amenable number.

5809856257 is a deficient number, since it is larger than the sum of its proper divisors (15831039).

5809856257 is a wasteful number, since it uses less digits than its factorization.

5809856257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15831038.

The product of its (nonzero) digits is 6048000, while the sum is 55.

The square root of 5809856257 is about 76222.4130882774. The cubic root of 5809856257 is about 1797.7189476945.

The spelling of 5809856257 in words is "five billion, eight hundred nine million, eight hundred fifty-six thousand, two hundred fifty-seven".