Search a number
-
+
57122830561 = 70019815819
BaseRepresentation
bin110101001100110010…
…010011100011100001
312110102222200110021011
4311030302103203201
51413441421034221
642124124300521
74061362022416
oct651462234341
9173388613234
1057122830561
1122253392085
12b0a23a1741
135504651074
142a9c70210d
151744d731e1
hexd4cc938e1

57122830561 has 4 divisors (see below), whose sum is σ = 57123716400. Its totient is φ = 57121944724.

The previous prime is 57122830559. The next prime is 57122830607. The reversal of 57122830561 is 16503822175.

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 57122830561 - 21 = 57122830559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57122837561) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 337891 + ... + 477928.

It is an arithmetic number, because the mean of its divisors is an integer number (14280929100).

Almost surely, 257122830561 is an apocalyptic number.

It is an amenable number.

57122830561 is a deficient number, since it is larger than the sum of its proper divisors (885839).

57122830561 is an equidigital number, since it uses as much as digits as its factorization.

57122830561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885838.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 57122830561 in words is "fifty-seven billion, one hundred twenty-two million, eight hundred thirty thousand, five hundred sixty-one".

Divisors: 1 70019 815819 57122830561