5297561581 has 8 divisors (see below), whose sum is σ = 5707773344. Its totient is φ = 4887736560.

The previous prime is 5297561557. The next prime is 5297561603. The reversal of 5297561581 is 1851657925.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5297561581 is a prime.

It is a super-2 number, since 2×5297561581² = 56128317408974439122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5297562581) 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, 67911 + ... + 123316.

It is an arithmetic number, because the mean of its divisors is an integer number (713471668).

Almost surely, 2^5297561581 is an apocalyptic number.

It is an amenable number.

5297561581 is a deficient number, since it is larger than the sum of its proper divisors (410211763).

5297561581 is a wasteful number, since it uses less digits than its factorization.

5297561581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193371.

The product of its digits is 756000, while the sum is 49.

The square root of 5297561581 is about 72784.3498356618. The cubic root of 5297561581 is about 1743.2459755817.

The spelling of 5297561581 in words is "five billion, two hundred ninety-seven million, five hundred sixty-one thousand, five hundred eighty-one".