57525779421 has 16 divisors (see below), whose sum is σ = 92970957120. Its totient is φ = 34864108560.

The previous prime is 57525779413. The next prime is 57525779453. The reversal of 57525779421 is 12497752575.

57525779421 is a `hidden beast` number, since 5 + 7 + 525 + 7 + 7 + 94 + 21 = 666.

It is not a de Polignac number, because 57525779421 - 2³ = 57525779413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57525779401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96844450 + ... + 96845043.

It is an arithmetic number, because the mean of its divisors is an integer number (5810684820).

Almost surely, 2^57525779421 is an apocalyptic number.

It is an amenable number.

57525779421 is a deficient number, since it is larger than the sum of its proper divisors (35445177699).

57525779421 is a wasteful number, since it uses less digits than its factorization.

57525779421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193689513 (or 193689507 counting only the distinct ones).

The product of its digits is 6174000, while the sum is 54.

The spelling of 57525779421 in words is "fifty-seven billion, five hundred twenty-five million, seven hundred seventy-nine thousand, four hundred twenty-one".