57251505077 has 8 divisors (see below), whose sum is σ = 61688341176. Its totient is φ = 52819365312.

The previous prime is 57251505019. The next prime is 57251505083. The reversal of 57251505077 is 77050515275.

It can be written as a sum of positive squares in 4 ways, for example, as 547513201 + 56703991876 = 23399^2 + 238126^2 .

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-57251505077 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 (57251505097) 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, 1148738 + ... + 1197539.

It is an arithmetic number, because the mean of its divisors is an integer number (7711042647).

Almost surely, 2^57251505077 is an apocalyptic number.

It is an amenable number.

57251505077 is a deficient number, since it is larger than the sum of its proper divisors (4436836099).

57251505077 is a wasteful number, since it uses less digits than its factorization.

57251505077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348167.

The product of its (nonzero) digits is 428750, while the sum is 44.

The spelling of 57251505077 in words is "fifty-seven billion, two hundred fifty-one million, five hundred five thousand, seventy-seven".