57285720501 has 4 divisors (see below), whose sum is σ = 76380960672. Its totient is φ = 38190480332.

The previous prime is 57285720493. The next prime is 57285720533. The reversal of 57285720501 is 10502758275.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57285720501 - 2³ = 57285720493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57285720901) 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 3 ways as a sum of consecutive naturals, for example, 9547620081 + ... + 9547620086.

It is an arithmetic number, because the mean of its divisors is an integer number (19095240168).

Almost surely, 2^57285720501 is an apocalyptic number.

It is an amenable number.

57285720501 is a deficient number, since it is larger than the sum of its proper divisors (19095240171).

57285720501 is a wasteful number, since it uses less digits than its factorization.

57285720501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19095240170.

The product of its (nonzero) digits is 196000, while the sum is 42.

The spelling of 57285720501 in words is "fifty-seven billion, two hundred eighty-five million, seven hundred twenty thousand, five hundred one".