57191000581 has 8 divisors (see below), whose sum is σ = 67189427424. Its totient is φ = 47992447920.

The previous prime is 57191000539. The next prime is 57191000591. The reversal of 57191000581 is 18500019175.

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 57191000581 - 2⁷ = 57191000453 is a prime.

It is a super-2 number, since 2×57191000581² (a number of 22 digits) 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 57191000581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57191000591) 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, 199968391 + ... + 199968676.

It is an arithmetic number, because the mean of its divisors is an integer number (8398678428).

Almost surely, 2^57191000581 is an apocalyptic number.

It is an amenable number.

57191000581 is a deficient number, since it is larger than the sum of its proper divisors (9998426843).

57191000581 is a wasteful number, since it uses less digits than its factorization.

57191000581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399937091.

The product of its (nonzero) digits is 12600, while the sum is 37.

The spelling of 57191000581 in words is "fifty-seven billion, one hundred ninety-one million, five hundred eighty-one", and thus it is an aban number.