57105505802 has 4 divisors (see below), whose sum is σ = 85658258706. Its totient is φ = 28552752900.

The previous prime is 57105505789. The next prime is 57105505823. The reversal of 57105505802 is 20850550175.

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

It can be written as a sum of positive squares in only one way, i.e., 28801144681 + 28304361121 = 169709^2 + 168239^2 .

It is a super-2 number, since 2×57105505802² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14276376449 + ... + 14276376452.

Almost surely, 2^57105505802 is an apocalyptic number.

57105505802 is a deficient number, since it is larger than the sum of its proper divisors (28552752904).

57105505802 is a wasteful number, since it uses less digits than its factorization.

57105505802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28552752903.

The product of its (nonzero) digits is 70000, while the sum is 38.

The spelling of 57105505802 in words is "fifty-seven billion, one hundred five million, five hundred five thousand, eight hundred two".