57087425081 has 4 divisors (see below), whose sum is σ = 57240474852. Its totient is φ = 56934375312.

The previous prime is 57087425077. The next prime is 57087425119. The reversal of 57087425081 is 18052478075.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46954989481 + 10132435600 = 216691^2 + 100660^2 .

It is a cyclic number.

It is not a de Polignac number, because 57087425081 - 2² = 57087425077 is a prime.

It is a super-2 number, since 2×57087425081² (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 (57087425051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76524326 + ... + 76525071.

It is an arithmetic number, because the mean of its divisors is an integer number (14310118713).

Almost surely, 2^57087425081 is an apocalyptic number.

It is an amenable number.

57087425081 is a deficient number, since it is larger than the sum of its proper divisors (153049771).

57087425081 is a wasteful number, since it uses less digits than its factorization.

57087425081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153049770.

The product of its (nonzero) digits is 627200, while the sum is 47.

The spelling of 57087425081 in words is "fifty-seven billion, eighty-seven million, four hundred twenty-five thousand, eighty-one".