57872551481 has 8 divisors (see below), whose sum is σ = 59441818440. Its totient is φ = 56303555328.

The previous prime is 57872551463. The next prime is 57872551511. The reversal of 57872551481 is 18415527875.

It can be written as a sum of positive squares in 4 ways, for example, as 15278196025 + 42594355456 = 123605^2 + 206384^2 .

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-57872551481 is a prime.

It is a super-2 number, since 2×57872551481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57872551441) 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, 410705 + ... + 533313.

It is an arithmetic number, because the mean of its divisors is an integer number (7430227305).

Almost surely, 2^57872551481 is an apocalyptic number.

It is an amenable number.

57872551481 is a deficient number, since it is larger than the sum of its proper divisors (1569266959).

57872551481 is a wasteful number, since it uses less digits than its factorization.

57872551481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135403.

The product of its digits is 3136000, while the sum is 53.

The spelling of 57872551481 in words is "fifty-seven billion, eight hundred seventy-two million, five hundred fifty-one thousand, four hundred eighty-one".