Search a number
-
+
57100565749 is a prime number
BaseRepresentation
bin110101001011011101…
…010111110011110101
312110101102210021200111
4311023131113303311
51413420221100444
642122011143021
74061001541423
oct651335276365
9173342707614
1057100565749
1122241865207
12b096a44a71
1354ccb56b16
142a99788113
151742e26234
hexd4b757cf5

57100565749 has 2 divisors, whose sum is σ = 57100565750. Its totient is φ = 57100565748.

The previous prime is 57100565699. The next prime is 57100565771. The reversal of 57100565749 is 94756500175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34362036900 + 22738528849 = 185370^2 + 150793^2 .

It is a cyclic number.

It is not a de Polignac number, because 57100565749 - 219 = 57100041461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57100565849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28550282874 + 28550282875.

It is an arithmetic number, because the mean of its divisors is an integer number (28550282875).

Almost surely, 257100565749 is an apocalyptic number.

It is an amenable number.

57100565749 is a deficient number, since it is larger than the sum of its proper divisors (1).

57100565749 is an equidigital number, since it uses as much as digits as its factorization.

57100565749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323000, while the sum is 49.

The spelling of 57100565749 in words is "fifty-seven billion, one hundred million, five hundred sixty-five thousand, seven hundred forty-nine".