57517125421 has 8 divisors (see below), whose sum is σ = 65735766720. Its totient is φ = 49298961408.

The previous prime is 57517125361. The next prime is 57517125427. The reversal of 57517125421 is 12452171575.

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 57517125421 - 2¹¹ = 57517123373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57517125427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193650 + ... + 390556.

It is an arithmetic number, because the mean of its divisors is an integer number (8216970840).

Almost surely, 2^57517125421 is an apocalyptic number.

It is an amenable number.

57517125421 is a deficient number, since it is larger than the sum of its proper divisors (8218641299).

57517125421 is a wasteful number, since it uses less digits than its factorization.

57517125421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238643.

The product of its digits is 98000, while the sum is 40.

Adding to 57517125421 its reverse (12452171575), we get a palindrome (69969296996).

The spelling of 57517125421 in words is "fifty-seven billion, five hundred seventeen million, one hundred twenty-five thousand, four hundred twenty-one".