Search a number
-
+
57754869881 is a prime number
BaseRepresentation
bin110101110010011101…
…010110000001111001
312112002000222101012212
4311302131112001321
51421240221314011
642310543144505
74113135202562
oct656235260171
9175060871185
1057754869881
1122548133625
12b239ba5135
1355a5586c27
142b1c629169
1517805be08b
hexd72756079

57754869881 has 2 divisors, whose sum is σ = 57754869882. Its totient is φ = 57754869880.

The previous prime is 57754869869. The next prime is 57754869901. The reversal of 57754869881 is 18896845775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34527585856 + 23227284025 = 185816^2 + 152405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57754869881 is a prime.

It is a super-2 number, since 2×577548698812 (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57754862881) 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 as a sum of consecutive naturals, namely, 28877434940 + 28877434941.

It is an arithmetic number, because the mean of its divisors is an integer number (28877434941).

Almost surely, 257754869881 is an apocalyptic number.

It is an amenable number.

57754869881 is a deficient number, since it is larger than the sum of its proper divisors (1).

57754869881 is an equidigital number, since it uses as much as digits as its factorization.

57754869881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135475200, while the sum is 68.

The spelling of 57754869881 in words is "fifty-seven billion, seven hundred fifty-four million, eight hundred sixty-nine thousand, eight hundred eighty-one".